Download technical specification for erection, testing

BSES Bhawan, Nehru Place, New Delhi- 19
TECHNICAL SPECIFICATION
FOR
ERECTION, TESTING & COMMISIONING OF
66KV FATEHPUR BERI O/D GRID SUBSTATION
AT NEW DELHI
ON TURNKEY BASIS
( SPEC NO. BRPL-EHV-TS- FATEHPUR BERI)
Prepared by
Javed Ahmed
Rev: 3
Reviewed by
Abhinav Srivastava
Date: 20.5.2015
Approved by
Kiran Alla
BSES Bhawan, Nehru Place, New Delhi- 19
Technical Specification for 66KV FATEHPUR BERI O/D Grid Substation in New Delhi
INDEX
S.No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
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34
Description
General Design Criteria
Civil Work
Station Transformer
66KV Outdoor Circuit Breaker
11KV Indoor Switchgear
66KV Control & Relay Panel
66KV Outdoor PT
66KV Outdoor CVT
66KV Outdoor CT
11KV Capacitor Bank
66KV LA
Outdoor Disconnecting Switch
Structural Work
Outdoor Switchyard Material
Battery Chargers
Ni – Cd Battery Bank
415 V AC Distribution Board
LT Power Cable
Control Cable
SCADA Interface Works & Automation
Cable Installation & Accessories
Grounding & Lightning Protection System
Illumination System
Exhaust & Ventilation System
Fire Detection & Alarm System
Fire Extinguisher
Transformer Oil
Solid Core Post Insulators
Lighting High Mast
NIFPS
Packing & Transportation
Materials Workmanship & Tests
Misc Activities
Approved Vendors
Page. No
1
13
45
66
73
91
109
123
135
156
172
175
180
187
204
211
215
220
237
247
264
270
278
284
287
291
294
297
309
322
330
333
337
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BSES Bhawan, Nehru Place, New Delhi- 19
Technical Specification for 66KV FATEHPUR BERI O/D Grid Substation in New Delhi
SCHEDULE & ANNEXURE
Schedule
Schedule – A
Schedule – B
Schedule – C1
Schedule – C2
Schedule – C3
Schedule – C4
Schedule – C5
Schedule – C6
Schedule – C7
Schedule – C8
Schedule – C9
Schedule – C10
Schedule – C11
Schedule – C12
Schedule – C13
Schedule – C14
Schedule – C15
Schedule – C16
Schedule – C17
Schedule – C18
Schedule – E1 & E2
Schedule – F
Schedule – G
Schedule – H
Schedule – I
Schedule – J
Schedule – K
Schedule – L
Annexure
Annexure-S
Annexure-L
Description
Schedule of General Information
Technical Data Sheets of Transformer Oil
Technical Data Sheets of HT Indoor Switchgear
Technical Data Sheets of 66KV CRP
Technical Data Sheets of Battery Chargers
Technical Data Sheets of Ni – Cd Battery Bank
Technical Data Sheets of Auxiliary Transformer
Technical Data Sheets of 11KV Capacitor Bank
Technical Data Sheets of LT Power Cable
Technical Data Sheets of Control Cable
Technical Data Sheets of Illumination System
Technical Data Sheets of 415 V AC Distribution Board
Technical Data Sheets of Cable Trays & Accessories
Technical Data Sheets of Grounding & Lightning Protection System
Technical Data Sheets of Cable Accessories
Technical Data Sheets of 66KV Outdoor CT
Technical Data Sheets of 66KV Outdoor PT & CVT
Technical Data Sheets of 66KV Outdoor Circuit Breaker
Technical Data Sheets of 66KV LA
Technical Data Sheets of Outdoor Disconnecting Switch
Deviation from Specification
List of Drawings enclosed with Bid
Schedule of Tests
List of instruments, Testing Equipment, Tools & Tackles for Erection
& Maintenance
List of Installation
Delivery, Terms and Conditions
Schedule of Recommended Spares
Declaration
Main Single Line Diagram
Substation Layout Plan (suggestive)
Page No.
350
352
354
368
372
374
376
386
388
390
392
395
397
398
399
400
404
406
413
416
420
422
423
424
425
426
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429
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BSES Bhawan, Nehru Place, New Delhi- 19
TECHNICAL SPECIFICATION
FOR
GENERAL DESIGN CRITERIA
Prepared by
Javed Ahmed
Rev: 0
Reviewed by
Abhinav Srivastava
Date: 10.4.2015
Approved by
Kiran Alla
1
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification | General Design Criteria
1.0 INTENT OF SPECIFICATION
This specification is intended to cover complete design, engineering, manufacturer,
assembling, testing at manufacturer’s works, supply and Transportation F.O.R. site of all
equipment and accessories, steel structures, all structural work, substation building, Civil and
architectural work, complete erection, testing, commissioning & putting into successful
commercial operation of 66/11 KV substation including of supply of all Labour, supervision,
tools, implements and supplies as required.
The 66KV Air insulated Double Bus Outdoor substation shall have following bays with
equipments and civil works: - Four (04) no’s Feeder Bay – Three (03) no’s Transformer bay One (01) no Bus Coupler bay. -Two (02) sets Bus PT.
The substation shall have control room building with 11KV Indoor Switchgear, 66KV Control
and Relay Panel, Battery & Battery Charger, ACDB, DCDB etc. The suggestive Layout Plan
and Single Line diagram of the substation is enclosed herewith.
This specification shall be read and constructed in conjunction with other sections of bidding
document. In the event of any discrepancy with the listed document, the most stringent one
shall govern. In the tender document, the term ‘Vendor’, ‘Bidder’ and ‘Contractor’ has been
used interchangeably.
It is advisable that bidder should visit the site to confirm its present status prior to submission
of their bid
2.0 SCOPE OF SUPPLY
This scope of work shall include design, engineering, manufacture, shop testing, inspection,
packing, dispatch, loading, unloading and storage at site, transit/storage and construction
insurance, assembly, erection, civil structural, architectural work, complete precommissioning checks, testing & commissioning at site, obtaining statutory clearance &
certification from State Electrical Inspector, Municipal corporation department, Fire officer,
Horticulture department etc. and handing over to the Owner after satisfactory commissioning
of complete 66/11 KV substation of BSES Rajdhani Power Ltd. at Fatehpur Beri, New Delhi.
The scope includes all material, equipment and works required for the construction of the
Substation complete with all items considered essential for safe and trouble-free continuous
commercial operation of the system in a manner acceptable to the Owner and complying with
latest revision of national and international standards Codes & Practices, Indian Electricity
Rules (relevant safety regulation of CEA) and Indian Electricity Act.
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BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification | General Design Criteria
The scope of supply broadly includes the following:
2.1 Major Equipments:
.
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
11KV Capacitor Bank with Motorized Isolator – 7.2 (3.6 + 3.6) MVAR, Three (3) Sets
66KV Control and Relay Panel – 8 Nos.
DCDB – One (1 No.)
ACDB – One (1 No.)
Station Aux. Transformer, 11/0.433KV, 400KVA – One (1 No.)
string bus with twin Zebra Conductor.
3Pole SF6, Circuit breaker with support structure – 8 Nos.
66KV single phase gapless metal oxide surge arrestor – 7 Sets (3 Nos. per set)
66KV Current Transformer – 24 Nos.
66KV Potential Transformer – 2 Sets.
66KV CVT--4 sets.
Horizontally rotating center break motorized isolators with one earth switch – 16 Nos.
Horizontally rotating center break motorized isolators with two-earth switch – 2 Nos.
Horizontally rotating center break motorized isolators without earth switch – 7 Nos.
SCADA RTU
High mast lights 16 M high – 4 Nos.
Outdoor Bay Marshalling Kiosk – 8 Nos.
2.2 Item as System
•
•
•
•
•
•
•
•
11KV VCB Switchgear with Numerical protection relays (refer SLD).
Grounding and earthing of entire substation including all the fences such as
Switchyard fencing, Aux. transformer fencing and capacitor bank fencing.
220V Battery bank, one set of Battery charger.
Outdoor illumination including street lighting with Poles.
Indoor illumination including emergency lighting (DC lighting incase of black out)
Exhaust and Ventilation for complete substation building.
Fire detection and alarm system.
Direct stroke lightning protection by shielding spikes and 7/8 SWG (10.98mm dia.)
galvanized shield wire.
2.3 Items as Lot
•
•
•
•
•
•
•
•
•
•
•
LT Power & Control cables supply and termination.
Supply and providing 11KV Power cable termination kits.
Galvanized lattice type switchyard equipment support structure including foundation
bolts.
Galvanized lattice type switchyard Towers including foundation bolts.
Galvanized lattice type switchyard Beams for conductor support.
Double and single suspension / tension string assembly.
Spacers, Clamps and connectors.
ACSR ZEBRA Conductor.
Cable trays.
Maintenance tools & tackles including testing instruments.
Cabling between equipments and RTU.
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Volume – I Technical Specification | General Design Criteria
2.4 Civil Works
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•
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•
•
•
•
Substation Building.
Foundation of towers, equipments including structures
Power Transformer foundation, oil soak pit, Fire Wall.
Foundation of lighting poles, bay-marshalling panel.
Capacitor bank foundation, Aux Transformer foundation and fencing.
Road and drainage within switchyard fence.
Anti weed treatment and gravel surfacing of the substation area.
Substation fencing and gates.
Indoor and Outdoor Cable Trenches with covers for 66 KV & 11 KV power Cables as
well as Control Cables.
Road, rainwater & storm drainage system for outdoor switchyard.
All civil work required for installation and erection of equipments inside and outside
building.
Supply of material required for above works.
Landscaping.
Guard room.
2.5 Design Work
Design documentation in sufficient copies including design memo, calculations, general
arrangement, plans, elevations and sectional drawings, sag/tension calculations, short circuit
calculations, electro-dynamic force calculations, single line diagrams, schematic
interconnection drawings, wiring diagrams, foundation calculations, foundation plans/details,
cable schedules, bill of materials, lighting system design calculations, earthing system design
calculations, illumination system design, calculation, conductor sizing, calculation insulation
coordination, protection coordination etc.
•
Lot
:
•
Lot
:
•
Lot
:
Operation & Maintenance Manuals and As-built drawings.
(Six sets hard copy & two sets soft copy)
Documentation required by State Electrical Inspector or by
other statutory body for statutory approval/certification of
the Substation installation. (as required)
Temporary sheds for storage of equipment, tools &
tackles, construction offices etc. with required fittings &
furnishings.
The above equipment and services are specifically listed for the guidance of the Bidder. Apart
from the above, Single Line Diagram and Layout Plan (suggestive) may also be referred for
further details of equipment. However, it is to be understood that the Contractor’s scope is not
limited to the items specifically listed above but covers all items required for the completion of
a safe and fully functional Substation.
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Volume – I Technical Specification | General Design Criteria
3.0 COMPLETION SCHEDULE
The contractor shall be fully responsible to complete the project in time. It is desired that the
total project should complete in 300 days from the date of LOI. The broad completion
schedule is attached here under for reference. The detail completion schedule shall be
prepared by contractor in MS-Project or Primavera software and shall be submitted at the
time of detail engineering for approval. The detail schedule shall be finalized with the help of
schedule given by owner.
Handing over or commissioning of complete substation shall be 300 days from the LOI issue
date.
Sl.No.
1
2
3
4
5
6
7
8
Description of Work
Zero Date (Letter of Award)
Submission of Drawings/Documents/calculations
for Engineering Approval
Engineering Approval
Civil Works
Procurement/Supplies
Equipment Erection
Testing & Commissioning of Substation
Handing Over
Time Line
30 days from Zero Date
60 days from Zero Date
130 days from Zero Date
220 days from Zero Date
220 days from Zero Date
270 days from Zero Date
300 days from Zero Date
4.0 ELECTRICAL POWER & WATER FOR CONSTRUCTION
Electrical Power Supply and Water for construction purpose shall be arranged by vendor.
5.0 SUPPLY AND WORKS BY OWNER
SUPPLIES AS FREE ISSUE ITEMS: The following items shall be supplied free of cost to
vendor
1. 11 kV 1x1000 sq. mm. XLPE Cables
2. 11 kV 3x300 sq. mm. XLPE Cables
3. 66 kV 1x1000 sq.mm. XLPE Cables (if required)
4. 66/11kV 25MVA Power Transformers(2 Nos.)
However, the termination kits for the above cables shall be in the scope of vendor. Laying of
these free issued cables inside the substation premises shall also be in the scope of vendor
only.
Power Transformers shall be supplied to vendor free of cost at site in unassembled condition.
Dragging, placing on foundation, assemble, erection, testing and commissioning shall be in
vendors scope. All necessary T&P and consumable accessories shall be provided by vendor.
WORKS BY OWNER: The following works shall be carried out by owners.
1. Soil Investigation and Soil resistivity test.
2. Laying of 66 kV infeed cables circuits from source substation including its termination
in line bays.
3. Laying of 11 kV outgoing cables circuits from 11 kV outgoing panels to load centre
including its termination.
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BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification | General Design Criteria
However, the trenches and cable trays for outgoing cables shall be in the scope of vendor.
6.0 CO-CORDINATION WITH STATUTORY BODIES & OUTSIDE AGENCIES
The contractor shall be fully responsible for carrying out all co-ordination and liaison work as
may be required with Electrical Inspector, Civic Agencies (MCD/DDA/PWD or any other),
Horticulture department, Fire officer or any other statutory bodies for implementation of the
work.
The application on behalf of BRPL for submission to the Electrical Inspector and other
statutory bodies along with copies of drawings complete in all respects shall be done by the
contractor & approval / certificates shall be obtained by the contractor well ahead of time so
that the actual commissioning of equipment is not delayed for want of inspection and
approval by the inspector & statutory bodies. The contractor shall arrange the actual
inspection work by Electrical Inspector.
However official fees paid to electrical inspector / statutory bodies shall be borne by the
owner.
7.0 CO–ORDINATION WITH OTHER CONTRACTOR & PURCHASER & OWNER’S
SYSTEM
The contractor shall be fully responsible for carrying out all the co-ordination work required
with the contractors as well as with owners system for execution and completion of his work.
8.0 TERMINAL POINTS OF VENDOR’S SCOPE
8.1
Up to Line take off point and including provision for Cable termination at the incomer and
outgoing bays.
8.2
Outdoor Cable Trenches
:
Upto the boundary wall of substation
8.3
Lighting
:
Within Outdoor Substation Area
8.4
Earthing
:
Within Substation area and building.
8.5
Water supply and drainage at suitable point near the substation boundary wall at location to
be decided later.
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BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification | General Design Criteria
9.0 SALIENT FEATURES, BASIC DESIGN CRITERIA AND MINIMUM TECHNICAL
REQUIREMENTS OF 66 KV SUBSTATION/SUBSTATION EQUIPMENTS
9.1
Introduction
BRPL is setting up 66/11KV Grid substation at New Delhi. The Substations shall be
constructed on turnkey EPC execution. EPC contractor is responsible for detailed design
also. In this paragraph only salient features, basic design criteria and Owner’s minimum
technical requirements are enumerated for the guidance of the Bidder. However, this should
be referred in conjunction with SLD enclosed. The salient features of substations has been
tabulated as under
Particulars
Voltage Level
Infeed Plan
Infeed arrangement
Infeed Scope
Substation Capacity
Type of Bus Bar
Present status of Land
Previous work done at site(if any)
Description
66/11 kV
66 kV infeed to the proposed Fatehpur Beri grid
substation shall be provided from DTL Mehrauli by
2x3 run of 1x1000 sq.mm XLPE Cables (double
circuit), which shall be extended to 220 kV PPK-III
grid substation of DTL after its commissioning.
66 kV U/G Cables (1x1000 mm2)
Owner’s Scope
2 x 25 MVA
ACSR Twin Zebra
In possession of BRPL
Nil
66 kV Infeed to the substations shall be provided as per the table above by laying 2 Nos. 66
KV infeed circuits comprising of 1x1000 sq.mm XLPE Cables per phase and shall be
terminated at 66KV incoming bays of respective substation. The laying of infeed 66 kV
cables, its termination in 66KV Bays, testing & commissioning will be in the owner’s scope
9.2
Substation Capacity
The substation capacity shall be as per the table in Clause no. 8.1 above. However, provision
(Civil foundation for equipment structures, Power Transformer Foundation, Cable trenches,
66kV C&R panel, and 11kV Switchgear panel etc.) for 3rd 25 MVA Power Transformer shall
be kept with turnkey execution of grid substation, so that the Transformer bay is ready in all
respect for installation of 3rd Power Transformer in future.
9.3
11KV Switchgears
The 11KV Switchgear shall be installed inside the substation building. The switchgears shall
be equipped with Vacuum circuit breaker. The metering and protection relays shall be part of
switchgear only. Control voltage shall be 220 V DC.
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BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification | General Design Criteria
9.4
66/11KV Power Transformer
The Outdoor Power transformer shall be 20/25MVA, ONAN/ONAF Rating with OLTC. The
microprocessor based Transformer monitoring relay (a-eberle relay model T060D201-00 or
equivalent) shall be provided in place of RTCC panel.
9.5
Battery Charger and Battery Bank
The Control supply shall be 220V DC. The Ni-Cd Battery bank shall be installed in separate
room with proper ventilation system as per safety requirement. The battery charger shall be
thyristor controlled installed inside control room building.
9.6
Capacitor Bank
Three sets of Capacitor bank shall be installed outdoor. Each set shall be 7.2 MVAR rated at
11KV comprising two sub banks of 3.6 MVAR each. Each sub bank shall be provided with
motorized 11KV Isolator.
9.7
66KV Control & Relay Panel:
It is intended to provide State-of-Art substation control, protection and metering system and
shall be integrated with SCADA system. The protection, metering & control system shall be
as per SLD and specification of 66KV CRP.
All the relays/IED communications shall be on IEC 61850/Modbus protocol.
9.8
Substation Building
The substation shall have single storied building with all the equipments installed on ground
floor. But the design of control room building shall be such decided that’s minimum one floor
can be added in future. The Cables shall be laid in cable trench with cable trays, inside and
outside of the building. Trenches shall be covered with trench cover.
9.9
SCADA and Automation
Supply and execute work related to interface of all electrical equipments with RTU panel
complete with all materials and accessories for efficient and trouble free operation
9.10 Other Parameters for 66 KV Substation
Following parameters /service conditions shall prevail for entire system design under the
scope of this turnkey project:
General Service Condition
S.No Particulars
Data
1
Design Ambient temperature
50 °C
2
Seismic Condition
Zone IV as per IS 1893
3
Wind Pressure
195 kg/M² upto elevation of 30 M as per IS 875
4
Maximum Relative Humidity
100%
5
Maximum Altitude above Sea level
1000M
6
Rainfall
750mm (concentrated in 4 months)
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BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification | General Design Criteria
7
Pollution level
Heavy/Dry
System Parameters
S.No. Parameters
1
Rated Voltage (kV)
2
Highest system Voltage (kV)
3
Rated Frequency (Hz)
4
System Neutral Earthing
5
Short Circuit rating (for 3 sec)
6
Basic Insulation Level
6.1
Impulse frequency withstand voltage (kVp)
6.2
Power frequency withstand voltage (kV rms)
HV Side
66
72.5
50 +/- 3%
Solidly Grounded
3600 MVA / 31.5 kA
LV Side
11
12
50 +/- 3%
Solidly Grounded
500 MVA / 26.3 kA
325
140
75
28
Parameters for Outdoor Switchyard Equipments (66KV)
S.No Particulars
1
Minimum Creepage
2
Minimum Clearances
2.1
Phase to Phase
2.2
Phase to Earth
3
Safety Clearances
3.1
Sectional Clearances
3.2
Height of lowest live point on the insulator from the ground
4
Bus Configuration
5
Conductor
6
Shielding Wire
Data
31mm/KV
630 mm
630 mm
3000 mm
4300 mm
Double Bus
/ Twin ZEBRA
7/8 SWG.
Site Service Conditions (considering main external road at 0.00 level)
S.No Particulars
Data
1
Substation Road Level
+750 mm
2
Control Room Building plinth level
+1500 mm
3
Equipment and Tower foundation plinth level
+1050 mm
10.0 CODES & STANDARDS
The contractor shall follow latest Indian Standards or international standard. Refer respective
equipment specification for applicable standards.
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BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification | General Design Criteria
ENGINEERING DELIVERABLES
The Bidder shall submit following minimum Engineering Deliverables from award of the
Contract. Any other drawing / calculation which is not listed below and may be required for
execution of the job shall also be submitted by the bidder.
S. No.
A.
1
2
3
4
5
6
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35
B.
1
2
3
Drawing Title
Electrical Drawing
Main Single Line Diagram indicating bus/breaker rating, cable/overhead conductor size,
fault levels of different voltage grade, Transformer details, metering and protection with
CT / PT cores / ratio / burden / accuracy class.
Complete BOQ of the substation with technical details.
Single Line Diagram of 415 V AC Distribution board
Single Line Diagram of 220V DC Distribution board
Overall Site Layout Plan
Maximum & Minimum fault level calculation for the substations.
Insulation coordination.
Switchgear/Control building layout – Plan.
Cable trench layout Plan & Section – outdoor.
Cable tray layout Plan & Section – Indoor.
BOQ of Cable trays and accessories.
Sizing calculation of LV Cables
Power cable schedules.
Control cable schedules.
BOQ of Cables.
Codification of cable trays and cable tray/cable tag marking concept.
Underground ground mat design Calculation from actual site soil investigation.
Drawing of Underground ground mat along with BOQ.
Drawing of Indoor equipment grounding details.
Outdoor equipment grounding arrangement and details.
BOQ of Grounding Materials.
Input/Output list of SCADA system.
Outdoor Illumination system design Calculation.
Indoor Illumination system design Calculation.
Drawing of Outdoor Illumination with erection details.
Drawing of Indoor Illumination with erection details.
Complete BOQ indoor and outdoor illumination system
CT/PT sizing/detail calculation of burden, knee point voltage
All major equipment sizing calculation
Cabling, earthing & lightning concept
Power Transformer foundation details, soak pit arrangement, firewall segregation
Fire fighting arrangement of Transformers and indoor equipments
Relay setting with calculations
Sizing Calculation of Main Bus Bar & Jack/Cover Bus Bar
As built documentation of the drawing / documents
Civil Drawing
Layout Plan For Control Building
Equipment and Gantry Foundation Details and calculations.
Cable Trench Details (Concrete & Reinforcement)
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Volume – I Technical Specification | General Design Criteria
4
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Capacitor Bank (GA, Concrete & Reinforcement)
Transformer foundation & Oil Separator Tank Plan and section.
Transformer foundation & Oil Separator Tank Reinforcement Details.
Structural detail of Gantry Tower with and without peak.
Structural Detail of "LA"
Structural Detail of "Circuit Breaker"
Structural Detail of "CVT"
Structural Detail of "CT"
Structural Detail of "PT"
Structural Detail of "PHC"
Structural Detail of "BPI"
Structural Detail of girder
Structural Details of Isolator
Over all layout plan indication landscaping.
Trench layout for switch yard
Sectional Details for Trenches
Conduit plan for Control room building.
Switch yard layout
Rainwater Harvesting details of Recharging well with bore well.
Under Ground Water Tank Details
GA and Details of fencing
GA and Details of Road
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BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification | General Design Criteria
11.0 SUBMISSION OF DRAWINGS & OTHER DOCUMENTS
BOQ, Calculations and other documents etc. shall be on A4 size paper. All the drawings shall
be drawn to the scale as far as possible on A3 size or larger size paper and should be
legible. The submission shall be
•
•
•
Two (02) Sets of approved and released for construction drawings/BOQ/Calculation
for Owners reference.
Six (06) Sets of final As Built drawings, design, BOQ, Calculation. O&M manual, for
all equipments supplied.
Soft copies of all drawings/Documents/calculation in Auto CAD and Microsoft office
file format as applicable.
Drawings shall be treated as submitted, only if provided with BOQ (If applicable). Transmittal
sheet shall be mandatory to attach with all the drawing and documents. Format for transmittal
shall be provided to successful bidder for drawing approvals etc.
12.0 QUALITY PLAN
Quality plan with respect to all major equipment and work has to be submitted by the
successful bidder for approval. Plan shall contain following as a minimum:
I.
An outline of the proposed work and programme sequence
II.
The structure of the supplier’s organization for the contract
III.
The duties and responsibilities assigned to staff ensuring quality of work for the
contract
IV.
Hold and notification points
V.
Submission of engineering documents required by the specification
VI.
The inspection of materials and component on receipt
VII.
Reference to the supplier’s work procedures appropriate to each activity
VIII.
Inspection during fabrication /construction
IX.
Final inspection & tests
Successful bidder shall include submittal of bills invoice, Bill of lading, factory test certificate
for grade, physical tests, dimension, and specific watt loss per kg of core material to the
purchaser for verification in quality plan suitably.
13.0 DEVIATIONS
Deviation from this specification, if any, shall be clearly brought out in the offer. Unless owner
explicitly accepts such deviations, it shall be considered that the offer fully complies with the
specification.
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BSES Bhawan, Nehru Place, New Delhi- 19
TECHNICAL SPECIFICATION
FOR
CIVIL WORK
1.0
INTENT:
Prepared by
Amrita Singh
Rev: 1
Reviewed by
Approved by
Date: 13th May, 2015
Rajinder Rajpal
13
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for Civil Work
The specification covers following.
1.1
Design, engineering, and construction of all civil works at BRPL Sub-Station. All civil
works shall also satisfy the general technical requirements specified in other sections of
this Specification and as detailed below.
1.2
Shall be designed to the required service condition / loads as specified elsewhere in
this Specification or implied as per National and International Standards. All civil works
shall be carried out as per applicable Indian Laws, CPWD Specifications and relevant
IS Codes. All materials shall be of best quality conforming to relevant Indian Standards
and Codes.
1.3
The Contractor shall furnish all design, drawings, labour, tools, equipment, materials,
temporary works, constructional plant and machinery, fuel supply, transportation and all
other incidental items not shown or specified but as may be required for complete
performance of the Works in accordance with approved drawings, CPWD
Specifications and direction of Owner.
1.4
The work shall be carried out according to the design / drawings to be developed by the
Contractor and approved by the Owner based on Tender Drawings supplied to the
Contractor by the Owner. For all buildings, structures, foundations etc. necessary
layout and details shall be developed by the Contractor keeping in view the functional
requirement of the Sub-Station facilities and providing enough space and access for
operation, use and maintenance based on the input provided by the Owner. Certain
minimum requirements are indicated in this specification for guidance purposes only.
However, the Contractor shall quote according to the complete requirements.
2.0
GEOTECHNICAL INVESTIGATION
The Owner will carry out Geo Technical Investigation and Topographical Survey for the
entire Sub-Station including switchyard. The copy of the report is attached as an input
to bidder for Civil Design & Estimation work.
3.0
SITE PREPARATION
3.1
Scope
This clause covers the design and execution of the work for site preparation, such as
clearing of the site, the supply and compaction of fill material, excavation and
compaction of backfill for foundation, road construction, drainage, trenches and final
topping by stone (broken hard stone).
3.2
General
3.2.1
The Owner shall make fairly leveled land available to the Contractor. The
layout and levels of all structures, etc shall be made by the Contractor at his
own cost from the general grids of the plot and benchmarks set by the
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Contractor and approved by the Owner. (The required filling up to formation
level shall be in the scope of Vendor). The Contractor shall give all help in
instruments, materials and personnel to the Owner for checking the detailed
layout and shall be solely responsible for the correctness of the layout and
levels.
3.3
3.2.2
The Owner shall provide constructed boundary wall around the plot with 02
entry gates. Contractor shall have to make good to all the damages to the
boundary wall and gates during work execution.
3.2.3
Contractor shall develop a building layout and other layouts so that the trees
inside the plot may be escaped from cutting. In extreme conditions, the tree
cutting is unavoidable, necessary permission shall be obtained by vendor from
respective Govt. Agency. Requisite formalities shall be carried out by Owner.
Compensatory plantation shall be done (if required) by vendor; BRPL shall
provide space for the same.
3.2.4
The Contractor shall develop the site area to meet the requirements of the
intended purpose. The site preparation shall conform to the requirements of
relevant sections of this specification or as per stipulations of standard
specifications.
3.2.5
If fill material is required, the fill material shall be suitable for the above
requirement. The fill shall be such a material and the site so designed as to
prevent the erosion by wind and water of material from its final compacted
position or the in-situ position of undisturbed soil.
3.2.6
Material unsuitable for founding of foundations shall be removed and replaced
by suitable fill material and to be approved by the Owner.
3.2.7
Backfill material around foundations or other works shall be suitable for the
purpose for which it is used and shall be compacted to the density described
under Compaction. Excavated material not suitable or not required for backfill
shall be disposed off by the contractor in areas as directed by Owner upto a
maximum lead of 5 km. Backfill material if found having mix of earth and fly ash
should not be used for top 30 cm of formation level and should be
supplemented with earth at the cost of contractor.
Excavation and Backfill
3.3.1
Excavation and backfill for foundations shall be in accordance with the relevant
code.
3.3.2
Whenever water level is met during the excavation, it shall be dewatered and
water level shall be maintained below the bottom of the excavation level during
excavation, concreting and backfilling. Nothing extra shall be payable by the
owner on this account.
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3.4
3.5
3.3.3
When embankments are to be constructed on slopes of 15% or greater,
benches or steps with horizontal and vertical faces shall be cut in the original
slope prior to placement of embankment material. Vertical face shall measure
not more than 1 m in height.
3.3.4
Embankments adjacent to abutments, culverts, retaining walls and similar
structures shall be constructed by compacting the material in successive
uniform horizontal layers not exceeding 15 cm in thickness. (of loose material
before compaction). Each layer shall be compacted as required by means of
mechanical tampers approved by the Owner. Rocks larger than 10cm in any
direction shall not be placed in embankment adjacent to structures.
3.3.5
Earth embankments of roadways and site areas adjacent to buildings shall be
placed in successive uniform horizontal layers not exceeding 20 cm in
thickness in loose stage measurement and compacted to the full width
specified. The upper surface of the embankment shall be shaped so as to
provide complete drainage of surface water at all times.
Compaction
3.4.1
The density to which fill materials shall be compacted shall be as per, relevant
IS and as per direction of Owner. All compacted sand filling shall be confined
as far as possible. Backfilled earth shall be compacted to minimum 95% of the
Standard Proctor's density at OMC. The sub grade for the roads and
embankment filling shall be compacted to minimum 95% of the Standard
Proctor's density at OMC. Cohesion less material sub grade shall be
compacted to 70% relative density (minimum).
3.4.2
At all times unfinished construction shall have adequate drainage. Upon
completion of the roads surface course. Adjacent shoulders shall be given a
final shaping, true alignment and grade.
3.4.3
Each layer of earth embankment when compacted shall be as close to
optimum moisture content as practicable. Embankment material which does
not contain sufficient moisture to obtain proper compaction shall be wetted. If
the material contains any excess moisture, then it shall be allowed to dry
before rolling. The rolling shall begin at the edges overlapping half the width of
the roller each time and progress to the center of the road or towards the
building as applicable. Rolling will also be required on rock fills. No compaction
shall be carried out in rainy weather.
Requirement for fill material under foundation
The thickness of fill material under the foundations shall be such that the maximum
pressure from the footing, transferred through the fill material and distributed onto the
original undisturbed soil will not exceed the allowable soil bearing pressure of the
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original undisturbed soil. For expansive soils the fill materials and other protections etc.
to be used under the foundation is to be got approved by the Owner.
4.0 DEVELOPMENT OF YARD:
4.1
Scope
4.1.1
The Contractor shall furnish all labour, equipment and materials required for
complete performance of the work in accordance with the drawings
specification and direction of the Owner.
4.1.2
Stone spreading shall be done in the Outdoor Sub-Station Yard area, Power
Transformer, Capacitor Bank and wherever equipments and or structures are
to be provided under present scope of work.
General Requirement:
The material required for site surfacing / stone filling shall be free from all types
of organic materials and shall be of standard quality, and as approved by the
Owner.
The material to be used for stone filling / site surfacing shall be uncrushed /
crushed / broken stone of 20 mm nominal size (ungraded single size)
conforming to Table 2 of IS:383 - 1970. Hardness, Flakiness shall be as
required for wearing courses are given below:
Sieve Analysis (Gradation)
(IS: 383 - Table - 2)
Sieve
% passing by weight
Size
100
40mm
20mm
10mm
85 – 100
0 – 20
0–5
One test shall be conducted for every 50 Cum.
Hardness
Abrasion value (IS: 2386 Part-IV) - not more than 40%
Impact value (IS: 2386 Part-IV) - not more than 30% and frequency shall be
one test per 50 CUM with a minimum of one test per source
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4.1.3
Before taking up the final yard treatment, antiweed treatment shall be applied
in the switchyard area wherever yard treatment is to be done, and the area
shall be thoroughly de-weeded including removal of roots. The
recommendation of local agriculture or horticulture department shall be sought
wherever feasible while choosing the type of chemical to be used.
Nevertheless the effectiveness of the chemical shall be demonstrated by the
contractor in a test area of 10M x 10M (approx.) and monitored over a period of
two to three weeks by the Engineer-in-Charge. The final approval shall be
given by Engineer-in-Charge and final approval given based on the results.
4.1.4
The antiweed chemical shall be procured from reputed manufacturers. The
dosage and application of chemical shall be strictly followed as per
manufacturer's recommendation. The contractor shall be required to maintain
the area free of weeds for a period of 1 year from the date of application of 1st
dose of antiweed chemicals
4.1.5
After all the structures/equipments are erected and antiweed treatment is
complete, the surface of the substation area shall be maintained,
rolled/compacted to the lines and grades as decided by Engineer-in-Charge.
De-weeding including removal of roots shall be done before rolling is
commenced. Engineer-in-Charge shall decide final formation level so as to
ensure that the site appears uniform free from undulations. The final formation
level shall however be very close to the formation level using manual or
machine roller with suitable water sprinkling arrangement to form a smooth and
compact surface.
4.1.6
After antiweed treatment & compaction of earth, final yard treatment shall be
carried out in the 4 layers as follows:
(a) Providing and laying in position 75mm thick base layer of cement concrete
1:5:10 (1 cement : 5 coarse sand : 10 brick aggregate 40mm nominal size).
(b) 12mm cement mortar 1:6 (1 cement : 6 coarse sand) over base layer of
1:5:10.
(c) Flat brick flooring with over burnt bricks/class designation 100 as per
approval of BRPL, including grouting in cement mortar 1:6 (1 cement : 6
coarse sand) and filling the joints 12mm thick all around the bricks.
(d) Over the base layer of site surfacing material, a final surface course of
minimum 100 mm thickness of 20 mm nominal size (single size ungraded)
broken stone shall be spread and uniformly leveled.
4.1.7
In areas that are considered by the Engineer-in-Charge to be too congested
with foundations and structures for proper rolling of the site surfacing material
by normal rolling equipments, the material shall be compacted by hand, if
necessary. Due care shall be exercised so as not to damage any foundation
structure or equipment during rolling compaction.
4.1.8
The sub grade shall be in moist condition at the time the cement concrete is
placed. If necessary, it should be saturated with water for not less than 6
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hours but not exceeding 20 hours before placing of cement concrete. If it
becomes dry prior to the actual placing of cement concrete, it shall be
sprinkled with water and it shall be ensured that no pools of water or soft
patches are formed on the surface.
5.0 SITE DRAINAGE:
5.1 Adequate site drainage system shall be provided by the Contractor. The Contractor shall
design the storm water drainage system covering all culverts, ditches, drains, etc. The
run off shall be calculated on the basis of maximum rainfall intensity that is likely to
occur over the catchment area in one hour period on an average of once in ten years.
The surface of the site shall be sloped to prevent the ponding of water. Outfall of
drainage shall be suitably connected to rainwater harvesting recharge pits. While
designing the drainage system following points shall be taken care of:
5.2 The maximum velocity for pipe drains and open drains shall be limited to 2.4m/sec
and 1.8m/sec respectively. However, minimum non-silting velocity of 0.6m/sec shall
be ensured. Longitudinal bed slope not milder than 1 in 1000 shall be provided.
5.4 For design of RCC pipes for drains and culverts, IS: 456 and IS: 783 shall be
followed.
5.5 The Contractor shall ensure that water drains are away from the site area and shall
prevent damage to adjacent property by this water. Adequate protection shall be given
to site surfaces, roads, ditches, culverts, etc. to prevent erosion of material by water.
5.6 For pipe drains, concrete pipe of class NP2 shall be used. However, for road crossings
etc. higher strength pipe of class NP3 shall be provided. For rail crossings, pipes
conforming to railway loading standards or at least NP4 class shall be provided.
Manholes shall be provided at every 30m interval, at connection points and at every
change of alignment.
5.7 Open surface drains shall be provided with Cement Concrete 1:2:4 of minimum
thickness of 100 mm or more as per design condition. PCC 1:2:4 shall be laid over
75mm thick layer of PCC 1:4:8 (1 cement: 4 coarse sand: 8 stone aggregate 20mm
nominal size.) Internal faces of drain are to be smooth and well finished with neat
cement punning as final course.
5.8 Pipe drains shall be connected through manholes at an interval of maximum 30m.
Effluents shall be suitably treated by the Contractor to meet all the prevalent statutory
requirements and local pollution control norms and treated effluents shall be conveyed
to the storm water drainage system at a suitable location for its final disposal.
5.9 All internal site drainage system, including the final connection/disposal to rainwater
harvesting recharge pits shall be part of Contractor’s scope including all required civil
work, mechanical & electrical systems. The Contractor shall connect drain(s) at one or
more points to rainwater harvesting recharge pits as feasible at site. The drainage layout
of the substation shall be approved by the Owner & all works shall be carried out by the
Contractor.
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5.10 The drainage scheme and associated drawings shall be got approved from the Owner.
6.0 ROADS AND CULVERTS
6.1
Inside substation roads to be provided for access along with car parking for three cars
and two wheeler parking for three vehicles. Building and parking are in the scope of
bidder. Layout of the roads shall be based on layout drawing for the substation. Parking
areas shall be provided for Site personnel and visitors as per layout drawing. Adequate
turning space for vehicles shall be provided and bend radius shall be set accordingly. It
has to be connected suitably with roads.
6.2
All substation roads shall be constructed so as to permit transportation of all heavy
equipment upto 50MT. The main approach roads upto Control Room Building and other
relevant roads will be Cement Concrete Roads. The other connecting roads and
pathways shall be of Paver blocks/CC Road as per site requirement. The pavers blocks
used for the roads shall be minimum 80mm thick with compressive strength not less
than 450Kg/cm2.
6.3
Road Standard shall be as per IRC standard.
6.4
Adequate provision shall be made for road drainage.
6.5
All the culverts and its allied structure (required for road/rail, drain trench crossings etc.)
shall be designed for class AA loading as per IRC standard/IS code.
6.6
All roads shall be designed for class 'E' of traffic as per IRC-37 Guidelines for the
design of flexible pavements.
7.0 TRANSFORMER FOUNDATION, RAIL TRACK/ ROAD CUM RAIL TRACK
7.1
The Contractor shall provide a permanent transfer track system integrated with the
power transformer foundation to enable installation and replacement of any failed unit
by the spare unit located at the site. The transfer track system shall be suitable to
permit the movement of any failed unit fully assembled with integral radiators and oil,
without the de-energization of any other equipment in the station. This system shall
enable the removal of any failed unit from its foundation to a repair area and the
installation of the spare unit. This system, preferably, shall not interfere with the normal
internal road and trench system. If trench/ drain crossings are required then suitable
RCC culverts shall be provided in accordance with I.R.C Code/ relevant IS.
7.2
Rail tracks shall be of RCC M-25 grade. The space between the tracks shall be
suitably filled with local sand and 75mm thick PCC of grade 1:3:6 placed over sand
filling. The top of PCC shall be upto the formation level. In case of road cum rail track
75mm thick PCC of grade 1:2:4 shall be placed upto the road level. Suitable drainage
system between the tracks shall be provided.
7.3
The rails shall be of first quality 52 kg/m medium manganese steel as per Indian
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Railway specification T-12-64 and its subsequent revision, joined together by fish
plates as per Indian Railway specification T-1/57 and their drawing no. 090M and
27mm diameter fish bolts. No joint shall be provided at less than L/3 of the longest part.
7.4
The grating shall be made of MS flat of size 50mmx 5mm placed at 30mm center to
center and 25mmx5mm MS flat at a pacing of 150mm at right angle to each other.
Maximum length of grating shall be 1500mm and width shall not be more than 500mm.
The gratings supported on ISMB 150mm shall be placed at the formation level and will
be covered with 100mm thick layer of broken/crushed/non-crushed stone having size
40mm to 60mm which acts as an extinguisher for flaming oil.
8.0
Oil Recovery System & Burnt Oil Tank
8.1
The oil recovery system shall be provided for all transformers (containing insulating oil
or any flammable or polluting liquid) in order to avoid spread of fire by the oil and for
environmental protection.
8.2
Each transformer including oil conservator tank and cooler banks etc. shall be placed
in a transformer pit surrounded by retaining walls (pit walls). The clear distance of the
retaining wall from the transformer shall be 20% of the transformer height or 0.8m
whichever is more. The transformer pit thus formed shall have a capacity equal to
volume of oil in the transformers. The MS grating placed at the formation level shall be
covered with 100mm thick gravel of 40mm nominal size which acts as an extinguisher
for flaming oil.
8.3
Each transformer pit shall be drained towards a sump pit whose role is to recover the
infiltrating water and the drained oil from the pit. The sump pit shall have sufficient
capacity to receive without overflowing the oil content of large transformers plus the
water content of any fixed fire fighting system and a certain quantity of rain water
collected from the pit connected to it. The system shall be provided with air vents large
enough to avoid over- pressure during operation. The whole internal surface of the
sump pit should be impermeable.
8.4
The retaining walls which make up the transformer pit shall be made of fire resistant
material such as reinforced cement concrete, fire brick etc and shall be impervious to
oil.
8.5
8.6
The floor of the transformer pit shall be of plain cement concrete of grade M25.
A Device showing level of sump pit shall be fitted along with the automatic pumping
system, which shall have sufficient capacity to evacuate the fire fighting & rainwater
from the sump pit. The water/ oil separation and drainage scheme shall be provided as
described in the paper (23-07/1972 Cigre Session) presented by working group 23.04
regarding oil pollution the contractor may propose other better scheme , if agreed by
OWNER/ENGINEER.
8.7
If the height of the retaining wall which form the transformer pit exceed 60cm, steps
shall be provided to facilitate access to the transformer and reactor.
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8.8
When designing the transformer pit, the movement of the transformer must be taken
into account.
8.9
It must be assured that the coefficient of crushed stone (granular material) penetration
which fills the transformer pit will be retained regardless of the climatic conditions.
9.0
CABLE & PIPE TRENCHES
9.1
The cable trenches and precast removable RCC cover (with lifting arrangement) shall
be constructed using RCC of M25 grade.
The cable trench wall shall be designed for the following loads.
•
•
9.2
Dead load of 155 kg/m length of cable support + 75 Kg on one tier at the end.
Triangular earth pressure + uniform surcharge pressure of 2T/m2.
Cable trench covers shall be designed for self weight of top slab + UDL of 2000 Kg/m2
+ concentrated load of 200 kg at centre of span on each panel. All trench covers shall
have desired reinforcement welded to minimum 6mm M.S. flat all round the cover.
Size of covers shall be per site requirement / direction of Engineer In Charge.
All cable trenches inside the buildings shall have covers comprising of 6 mm thick
chequered plates fixed on angle 40 x 40 x 5 mm frame. However, as per site
requirement precast perforated RCC cover/ RCC slab shall be provided in place of
chequered plates.
9.3
Cable trench crossing the road/rails shall be designed for class AA loading of
IRC/relevant IS Code and should be checked for transformer/reactor loading.
9.4
Trenches shall be drained. Necessary sumps be constructed and sump pumps if
necessary shall be supplied/ installed. Cable trenches shall not be used as storm water
drains.
9.5
The top of cable trench shall be such that the surface rain water does not enter the
trench. The top of trenches shall be kept at least 100 mm above the floor level of yard.
9.6
All metal parts inside the trench shall be connected to the earthing system.
9.7
HT, LT & Control Cables from trench to equipments shall run in hard conduit pipes.
9.8
The trench bed shall have a perpendicular to the run. Trench wall shall not foul with the
foundation. Suitable clear gap shall be provided.
9.9
The trench bed shall have a slope of 1/500 along the run & 1/250 perpendicular to the
run.
9.10 All the construction joints of cable trenches i.e. between base slab to base slab and the
junction of vertical wall to base slab as well as from vertical wall to wall and all the
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expansion, joints shall be provided with approved quality PVC water stops of approx.
230 x 5 mm size for those sections where the ground water table is expected to rise
above the junction of base slab and vertical wall of cable trenches.
9.11 Cable trenches shall be blocked at the ends if required with brick masonry in cement
sand mortar 1:6 and plaster with 12mm/15mm thick 1:4 cement and mortar.
10.0 FOUNDATION / RCC CONSTRUCTION
10.1 General
10.1.1 Work covered under this Clause of the Specification comprises the design and
construction of foundations and other RCC constructions for switchyard structures,
equipment supports, trenches, drains, jacking pad, pulling block, control cubicles, bus
supports, Power transformer/Reactors, marshalling kiosks and auxiliary equipments,
tanks or for any other equipment or service and any other foundation required to
complete the work. This clause is as well applicable to the other RCC constructions.
10.1.2 Concrete shall conform to the requirements mentioned in IS: 456 and all the tests
shall be conducted as per relevant Indian Standard Codes as mentioned in Standard
field quality plan appended with the specification. A minimum grade of M25 concrete
shall be used for all structural/load bearing members as per latest IS: 456 (latest
revision).
10.1.3
If the site is sloppy, the foundation height will be adjusted to maintain the
exact level of the top of structures to compensate such slopes.
10.1.4 The switchyard foundation's plinths shall be minimum 300mm above finished
yard level.
10.1.5 Minimum 75mm thick lean concrete (1:4:8) shall be provided below all
underground structures, foundations, trenches etc. to provide a base for
construction.
10.1.6 Concrete made with Portland cement shall be carefully cured and special
importance shall be given during the placing of concrete and removal of
shuttering.
10.1.7 The design and detailing of foundations shall be done based on the approved
soil data and sub-soil conditions as well as for all possible critical loads and
the combinations thereof. The Spread footings foundation or pile foundation
as may be required based on soil/sub-soil conditions and superimposed loads
shall be provided.
10.1.8 If pile foundations are adopted, the same shall be cast-in-situ driven/bored or
precast or under reamed type as per relevant. parts of IS Code 2911. Only
RCC piles shall be provided. Suitability of the adopted pile foundations shall
be justified by way of full design calculations. Detailed design calculations
shall be submitted by the bidder showing complete details of piles/pile groups
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proposed to be used. Necessary initial load test shall also be carried out by
the bidder at their cost to establish the piles design capacity. Only after the
design capacities of piles have been established, the Contractor shall take up
the job of piling. Routine tests for the piles shall also be conducted. All the
work (design & testing) shall be planned in such a way that these shall not
cause any delay in project completion. The contractor shall go for vertical load
testing or lateral load testing. The contractor may choose static or dynamic
load testing upon site condition and time constraint.
10.2
Design
10.2.1 All foundation shall be of reinforced cement concrete. The design and
construction of RCC structures shall be carried out as per IS: 456 and
minimum grade of concrete shall be M-25.
10.2.2 Limit state method of design shall be adopted unless specified otherwise in
the specification.
10.2.3 For detailing of reinforcement IS: 2502 and SP: 16 shall be followed. TMT
bars conforming to IS: 1786 shall be used as reinforcement. However, in
specific areas mild steel (Grade I) conforming to IS: 432 can also be used.
Two layers of reinforcement (on inner and outer face) shall be provided for
wall & slab sections having thickness of 150 mm and above. Clear cover to
reinforcement towards the earth face shall be minimum 40 mm.
10.2.4 RCC water retaining structures like storage tanks, etc. shall be designed as
uncracked section in accordance with IS: 3370 (Part I to IV) by working stress
method. However, water channels shall be designed as cracked section with
limited steel stresses as per IS: 3370 (Part I to IV) by working stress method.
10.2.5 The procedure used for the design of the foundations shall be the most critical
loading combination of the steel structure and or equipment and/or
superstructure and other conditions, which produces the maximum stresses in
the foundation or the foundation component and as per the relevant IS Codes
of foundation design. Detailed design calculations shall be submitted by the
bidder showing complete details of piles/pile groups proposed to be used.
10.2.6 Design shall consider any sub-soil water pressure that may be encountered
following relevant standard strictly.
10.2.7 Necessary protection to the foundation work. If required shall be provided to
take care of any special requirements for aggressive alkaline soil. Black cotton
soil or any other type of soil, which is detrimental / harmful to the concrete
foundations.
10.2.8 RCC columns shall be provided with rigid connection at the base.
10.2.9 All sub-structures shall be checked for sliding and overturning stability during
both construction and operating conditions for various combinations of loads.
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Factors of safety for these cases shall be taken as mentioned in relevant IS
Codes as stipulated elsewhere in the Specifications, For checking against
overturning. weight of soil vertically above footing shall be taken and inverted
frustum of pyramid of earth on the foundation should not be considered.
10.2.10 Earth pressure for all underground structures shall be calculated using coefficient of earth pressure at rest. Co-efficient of active or passive earth
pressure (whichever is applicable). However, for the design of substructures
of any underground enclosures, earth pressure at rest shall be considered.
10.2.11 In addition to earth pressure and ground water pressure etc., a surcharge load
of 2T/Sq.m shall also be considered for the design of all underground
structures including channels, sumps, tanks, trenches, and substructure of
any underground hollow enclosure etc, for the vehicular traffic in the vicinity of
the structure.
10.2.12 Following conditions shall be considered for the design of water tank in pumps
house, channels, sumps, trenches and other underground structures:
10.2.12.1 Full water pressure from inside and no earth pressure,
ground water pressure & surcharge pressure from outside
(application only to structures, which are liable to be filled up
with water or any other liquid).
10.2.12.2 Full earth pressure, surcharge pressure and ground water
pressure from outside and no water pressure from inside.
10.2.12.3 Design shall also be checked against buoyancy due to the
ground water during construction and maintenance stages.
Minimum factor of safety of 1.5 against buoyancy shall be
ensured ignoring the superimposed loadings.
10.2.13 Base slab of any underground enclosure shall also be designed for empty
condition during construction and maintenance stages with maximum
groundwater table (GWT). Minimum factor of safety of 1.5 against buoyancy
shall be ensured ignoring the super-imposed loadings.
10.2.14 Base slab of any underground enclosure like water storage tank shall also be
designed for the condition of different combination of pump sumps being
empty during maintenance stages with maximum GWT. Intermediate dividing
piers of such enclosures shall be designed considering water in one pump
sump only and the other pumps sump being empty for maintenance.
10.2.15 The foundations shall be proportioned so that the estimated total and
differential movements of the foundations are not greater than the movements
that the structure or equipment is designed to accommodate.
10.2.16 The foundations of transformer shall be of block type foundation. Minimum
reinforcement shall be governed by IS: 2974 and IS: 456.
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10.2.17 The equipment foundations shall be checked for a factor of safety of 2.2 for
normal condition and 1.65 for short circuit condition against sliding,
overturning and pullout. The same factors shall be used as partial safety
factor over loads in limit state design also.
10.3 Admixture & Additives
10.3.1 Only approved admixtures shall be used in the concrete for the Works. When
more than one admixture is to be used, each admixture shall be batched in its
own batch and added to the mixing water separately before discharging into
the mixer. Admixtures shall be delivered in suitably labeled containers to
enable identification.
10.3.2 Admixtures in concrete shall conform to IS: 9103. The waterproofing cement
additives shall conform to IS: 2645. Owner shall approve concrete
Admixtures/ Additives.
10.3.3 The contractor may propose and the Owner may improve the use of a waterreducing set-retarding admixture in some of the concrete. The use of such an
admixture will not be approved to overcome problems associated with
inadequate concrete plant capacity or improperly planned placing operation
sand shall only be approved as an aid to overcoming unusual circumstances
and placing conditions.
10.3.4 The water-reducing set-retarding admixture shall be an approved brand of
Ligno-sulphonate type admixture.
10.3.5 The waterproofing cement additives shall be used as required/advised by the
Owner.
10.3.6 Water proofing treatment on roof shall be as per Item No 22.7.1 - DSR 2012.
11.0
11.1
FIRE PROTECTION WALLS
General
11.1.1 Fire protection walls shall be provided, if required, in accordance with Tariff
Advisory Committee (TAC) recommendations.
11.2 Material
11.2.1 The firewall may be made of reinforced cement concrete (M-25 grade), fire
brick, concrete blocks or corrugated iron on a steel structure as per the
system requirements. Materials used must conform to the standards of the
National Fire Prevention Association & TAC Norms.
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11.3 Fire Resistance
11.3.1 The firewall shall have a minimum fire resistance of 3 hours. The partitions,
which are made to reduce the noise level of the transformers, shall have the
same fire resistance where the partitions are also used as firewalls. The walls
of the building, which are used as firewalls, shall also have a minimum fire
resistance of 3 hours.
11.3.2
The firewall shall be designed to protect against the effect of radiant heat and
flying debris from an adjacent fire.
11.4 Dimensions
11.4.1 The barrier shall extend at least 300 mm above the transformer bushing and
pressure relief vent and length wise 600 mm beyond the transformer including
any radiators and tap changer enclosure.
11.4.2 These dimensions might be reduced in special cases, as per the approval of
owner where there is lack of space. A minimum of 2.0 meter clearance shall
be provided between the equipments e.g. Autotransformer/Power transformer.
11.4.3 The building walls, which act as firewalls, shall extend at least 1 m above the
roof in order to protect it.
11.4.4 The firewall shall be made of reinforced cement concrete (M-20 grade), as per
the system requirements.
11.5 Mechanical Resistance
11.5.1 The firewall shall have the mechanical resistance to withstand local
atmosphere conditions. If this wall shall serve as a support for equipment such
as insulators etc, it mechanical rigidity must be increased.
Connecting the walls by steel or other structures which may produce a
reversing torque if overheated shall be avoided.
12.0 IRC WELD MESH FENCING, GATE
12.1 General
Fencing shall be designed for the most critical loading combination taking care of wind
force, stability, tension on wires, minimum requirements as per this clause for are
materials IS 8910 and fabrication IS 800 as per recommendations
12.2
Areas and Requiring Fencing
Fencing shall be providing for the following areas:
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12.2.1 Site fencing for the complete Outdoor substation Yard area including Power
transformer area.Gates shall be provided for men and machine / equipment to
be taken out of the substation.
12.2.2 Capacitor bank cage, which shall be part of the capacitor bank supply.
Wherever necessary anti-reptile fixture/arrangement shall be provided along
with fencing.
12.2.3 Fencing of Aux. Substation Transformer
12.3
Product Material
12.3.1 The minimum requirements are as follows:
IRC Weld Mesh Fencing in accordance to relevant IS Code
12.3.1
•
•
•
•
•
Size of IRC mesh
Nominal wire size
Width of fencing panel
Height of fencing
Fabrication of panels
•
Paint
25X75mm
2
6 gauge/ 7.75 kg/m
2400mm
2000mm
40mm Nominal bore M.S. Pipe
(medium duty). Providing elbow/bend
at corners & 40 x 5 mm M.S. Flats in
beading
Aluminum Paint
Posts
Intermediate Straining Post : 65mm Nominal bore, M.S. Pipe
(Medium duty)
Base Plate
: 12mm M.S. Plate with 4 nos of hole.
Nuts & bolts of suitable diameter.
Paint
: shall be painted with a coat of approved
steel primer and two coats of synthetic enamel
paint
The IRC weld mesh Panels shall be fixed to the post at the top and bottom of
the 65mm Nominal bore, M.S. Pipe by Nuts and bolts. The Intermediate
straining Posts to be erected by using holding down bolts and nuts grouted in
toe wall around the Yard (the height of Yard Toe wall to be at least 450 mm
above the yard level and upto 340 mm wide).
12.3.2 The Tension wire shall be single strand, three layer and high tensile
galvanized steel wire of 4mm diameter.
12.4
Installation
12.4.1
Fence shall be installed along switchyard line.
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12.4.2
Post holes shall be excavated by approved methods.
12.4.3
Intermediate posts shall be spaced 2.5 m apart measured parallel to ground
surface.
12.4.4 Posts shall be set in 1:2:4 plain cement concrete blocks of minimum
dimension (340 mm x 340 mm x 750 mm deep) Concrete work shall conform
to relevant clause. Post shall be braced and held in plumb position and true
alignment and elevation until concrete has set.
12.4.5 Fence fabric shall not be installed until concrete has cured a minimum of 7
days.
12.4.6
Bottom and top of the fence panels shall be fixed with post by MS flats of 50
mm x 6 mm (min).
12.4.7 Toe wall of Brick masonry, with notches over 75 mm thick PCC (1:4:8 ) shall
be provided below all fencing and shall be minimum 450 mm above and 450
mm below finished ground level. All exposed surfaces of brick toe wall shall
be provided with 1:4 cement sand plaster (1 cement : 4 coarse sand) and
coated with two coats of Acrylic Smooth exterior paint with a base coat of
approved cement primer.
12.5 Gates
12.5.1
The main gates in boundary wall shall be provided as per BRPL approved
standard design / drawing. The outer frame of gate shall be of MS tube( 50
x 50 x 4.5 mm ,wt 6.02kg/mtr )
12.5.2
The gates shall be fabricated with welded joints to achieve rigid connections.
The gate frames shall be painted with one or more coat of approved steel
primmer and two coats of synthetic enamel paint.
12.5.3 Gates shall be fitted with approved quality iron hinges. Hinges shall permit
gates to swing through 180 degree.
12.5.4 Gates shall be fitted with galvanized chain hook or gate hold back to hold
gates open. Double gates shall be fitted with centre rest and drop bolt to
secure gates in closed position.
12.5.5
Main Gate shall be 6m wide. Gates shall be installed in locations shown on
drawings. Next to the main gate, a men gate (1.25 m wide, single leaf) shall
also be provided as a wicked gate.
12.5.6 Bottom of gates shall be set approximately 40mm above ground surface and
necessary guiding mechanism shall be fitted as per site requirement.
12.5.7 The gates shall be provided with suitable locking arrangement.
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13
BUILDINGS
13.1 General Requirements
The scope include the design, engineering and construction including anti-termite
treatment, plinth protection DPC of Building including sanitary, water supply,
electrification, fire fighting system, etc. of control room building. The building shall be of
RCC framed structure of concrete of M25 grade (Min.)
13.2 Control Room Building
Minimum floor area requirements have been given in tender drawings, which may be
increased at the time of detailed engineering to suit project requirements.
An open space of 1.2 m minimum shall be provided on the periphery of the rows of
panel and equipment generally in order to allow easy operator movement and access
as well as maintenance.
Future extension of one floor shall be considered at the time of design. Any other
possibility of annex building shall be taken care of while finalizing the layout of the
control room building.
Control Room cum Administrative building shall be constructed as per the approved
drawings by owner. CPWD specification shall be followed in all the building works. The
minimum height of soffit of beam from floor level shall be 3.6m.
13.2.1 Design
a) The Building shall be designed on Green Building Concept. The design
of control room building shall be such decided that’s minimum one floor
can be added in future.
Following parameters shall be followed: •
To the requirements of the National Building Code of India and the
standards quoted therein. The contractor shall also arrange approval
of building from any local authorities such as MCD or fire officer if
required so. The official fees shall be born by BRPL.
•
For the specified climatic & loading conditions.
•
To adequately suit the requirements of the equipment and apparatus
contained in the buildings and in all respects to be compatible with
the intended use and occupancy.
•
With a functional and economical space arrangement.
•
To be aesthetically pleasing. Different structures shall show a
uniformity and consistency in architectural design.
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•
To allow for easy access to equipment and maintenance of the
equipment.
•
With, wherever required, fire retarding materials for walls, ceilings
and doors, which would prevent supporting or spreading of fire.
•
With materials preventing dust accumulation.
b) Suitable expansion joints shall be provided in the longitudinal direction
wherever necessary with provision of twin columns.
c) Individual members of the buildings frame shall be designed for the worst
combination of forces such as bending moment, axial force, shear force,
torsion etc.
d) Permissible stresses for different load combinations shall be taken as per
relevant IS Codes..
e) The building lighting shall be designed in accordance with the
requirements of relevant section.
f)
The building auxiliary services like exhaust and ventilation systems, fire
protection and detection systems and all other miscellaneous services
shall be designed in accordance with the requirements specified in
relevant section or elsewhere in the Specification for the project.
g) Two nos. of emergency exits shall be provided in the building.
13.2.2 Design Loads
Building structures shall be designed for the most critical combinations of dead
loads, super- imposed loads, equipment loads, crane load, wind loads, seismic
loads, and temperature loads Dead loads shall include the weight of structures
complete with finishes, fixtures and partitions and should be taken as per
IS:1911. Super-imposed loads in different areas shall include live loads, minor
equipment loads, cable trays, small pipe racks & hangers and erection,
operation and maintenance loads. Equipment loads shall constitute, if
applicable, all load of equipments to be supported on the building frame The
wind loads shall be computed as per IS 875, Seismic Coefficient method shall
be used for the seismic analysis as per IS 1893 with importance factor 1.5.
For temperature loading, the total temperature variation shall be considered as
2/3 of the average maximum annual variation in temperature. The average
maximum annual variation in temperature for the purpose shall be taken as the
difference between the mean of the daily minimum temperature during the
coldest month of the year and mean of daily maximum temperature during the
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hottest month of the year. The structure shall be designed to withstand
stresses due to 50% of the total temperature variation. Wind and Seismic
forces shall not be considered to act simultaneously.
Floors/slabs shall be designed to carry loads imposed by equipment. Floors
shall be designed for live loads as per relevant American standards. Cable and
piping loads shall also be considered additionally for floors where these loads
are expected.
In addition, beams shall be designed for any incidental point loads to be
applied at any point along the beams, the floor loads shall be subject to
Owner’s approval.
For consideration of loads on structures IS: 875, the following minimum
superimposed live loads shall however be considered for the design.
Roof
for
RCC-Floor
equipment
2.5 KN/M2
for accessible roofs
0.75 KN/M2
in-accessible roofs
(i) 5 KN/M2
for offices for
(ii) 15 KN/M2 (min)
floors or actual
requirement, if
higher than
15KN/M2 based on
equipment
Component weight
and Layout plan
Stairs
& balconies
5 KN/M2
Toilet Rooms
2 KN/M2
Chequered plate floor
4 KN/M2
Walkways
3 KN/M2
Any additional load coming in the structure shall be calculated as per IS: 875.
13.2.3 Submission
The following information shall be submitted for review and approval to the
Owner:
a)
Design criteria shall comprise the codes and standards used. Applicable
climatic data including wind loads, earthquake factors maximum and
minimum temperatures applicable to the building locations, assumptions
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of dead and live loads, including equipment loads, impact factors. safety
factors and other relevant information.
b)
Structural
design
calculations
and
drawing
(including
construction/fabrication) for all reinforced concrete and structural steel
structures.
c)
Fully, dimensioned concept plan including floor plans, cross sections,
longitudinal sections, elevations and perspective view of each building.
These drawings shall be drawn at a scale not smaller than I : 50 and
shall identify the major building components.
d)
Fully dimensioned drawings showing details and sections drawn to
scales of sufficient size to clearly show sizes and configuration of the
building components and the relationship between them.
e)
Product information of building components and materials, including
walls partitions flooring ceiling, roofing, door and windows and building
finishes.
f)
A detailed schedule of building finishes including color schemes.
g)
A door & window schedule showing door types and locations, door lock
sets and latch sets and other door hardware.
Approval of the above information shall be obtained before ordering materials
or starting fabrication or construction as applicable.
13.2.4 Finish Schedule
The finishing schedule is given in subsequent clauses.
13.2.5 Flooring
Flooring in various rooms of control room building shall be as for detailed
schedulesgiven in Table – 1. Pantry countertop shall be of granite stone of
required specification as per direction of Engineer-In- Charge
13.2.6 Walls
Control room building shall be of framed superstructure. All walls shall be nonload bearing walls. Minimum thickness of walls shall be 340mm upto DPC level
in cement mortar 1:6 (1 Cement : 6 Coarse sand) and 230mm above DPC level
in cement mortar 1: 4 (1 Cement :4 coarse sand).
13.2.7 Plastering
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All internal walls shall have minimum 12mm/ 15mm thick 1:4 (1 Cement : 4 fine
Sand) cement sand plaster. The ceiling shall have 6mm thick 1:3 cement sand
plaster
13.2.8 Finishing
All external surfaces shall have stone grit/ Marble Chips with colour pigment
(with groves formed) (item no.13.72-DSR 2012)) finish over, 12mm thick
cement sand plaster 1:4 (1 cement:4 coarse sand) mixed with water proofing
compound in the ratio 8S recommended by the manufacturer. Suitable pigment
shall be added to render the surface aesthetically pleasing as per directions of
Engineer-in-charge.
13.2.9 Door & Window
The details of doors and windows of the control room building shall be as per
finish schedule Table-l and tender drawing with the relevant IS, code. Rolling
steel shutters and rolling shutters grills shall be provided as per layout and
requirement of buildings. Paints used in the work shall be of best quality
specified in CPWD specification.
13.2.10 Partition
Partition made of anodized Aluminum frame provided with 6.0 mm thick clear
glass shall be supplied and installed at locations shown in tender drawings.
13.2.11 Internal Electrification
Electrical wiring shall be through heavy duty consealed conduits. All fixtures
and wiring shall be of best quality and ISI marked. (Fixtures shall be provided
as per provision of energy conservation act), CFL Type.
13.2.12 Plumbing & Sanitation
a) All plumbing and sanitation works shall be executed to comply with the
requirements of the appropriate bye-laws, rules and regulations of the
Local Authority having jurisdiction over such matters. The Contractor
shall arrange for all necessary formalities to be met in regard to
inspection, testing, obtaining approval and giving notices etc.
b) PVC syntex or equivalent make Roof water tank of adequate capacity
depending on the number of users for 24 hours storage shall be
provided. Minimum 2 Nos. 1000 liters capacity shall be provided.
c) Galvanized MS pipe of medium class conforming to IS:1239 shall be
used for internal & external piping work for potable water supply.
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d) Sand CI pipes with lead joints: confirming to IS: 1729 shall be used for
sanitary works above ground level.
e) Each toilet shall have minimum fittings
i) Water closet (European type W.C. pan) 390 mm high (item no.
17.3.1- DSR 2012) or water closet (Indian type W.C. pan) Orissa
Pattern (580 x 440 mm) (item no. 17.1.1- DSR 2012) with all fittings
(both types of WCs shall be provided at alternate locations).
ii) Half Stall Urinal (580 x 380 x 350 mm) with all fittings (item no.
17.5.2- DSR-2012).
iii) Wash basin (630 x 450 mm) with all fittings (item no. 17.7.1- DSR
2012).
iv) Bathroom mirror (600 x 450 x 6 mm thick) hard board backing (item
no. 17.31- DSR 2012).
v) CP brass towel rail (600 x 20 mm) with C. P. brass brackets
vi) Soap holder and liquid soap dispenser.
f)
Water cooler for drinking water with adequate water storage facility shall
be provided and located near control room instead of near toilet block.
g) An Eye & face fountain conforming to IS:10592 shall be provided for
battery room.
h) 1 No stainless steel A ISI304(18/8) kitchen sink with Drain board (510 x
1040 x 225mm bowl depth as per IS 13893 for pantry shall be provided
complete with all fittings (item no. 17.10.1.2-DSR 2012).
i) All fittings, fastener, grating shall be chromium plated.
j)
All sanitary fixtures and fittings shall be of approved quality and type
manufactured by well known manufacturers. All items brought to site
must bear identification marks of the type of the Manufacturer.
k) Soil, waste and drain pipes, for underground works shall be stoneware
for areas not subject to traffic load. Heavy-duty cast iron pipes shall be
used otherwise.
14
STORM WATER DRAINAGE FOR CONTROL ROOM BUILDING
The building drain shall be provided for the collection of storm water from the roofs.
This water shall be collected in chambers and these chambers shall drain to the main
drainage system of the station which shall in turn be connected to rain water harvesting
recharge pits.
Cast Iron rain water down comers conforming to IS:1230 with water tight lead joints
shall be provided to drain off the rain water from the roof. These shall be suitably
concealed with masonry work or cement concrete or cladding material. The number
and size of down comers shall be governed by IS:1742 and IS:2527.
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All external drains shall be covered with precast perforated RCC covers of suitable size
and thickness.
For all buildings, suitable arrangement for draining out water collected from equipment
blow down, leakages, floor washings fire fighting etc. shall be provided for each floor.
15
TESTING
The sampling & testing of the construction materials sall be in accordance to CPWD
Specifications 2009 Volume – I & Volume – II as stated in the sub – Heads No. 1.0 to
23.0 related to all activities of the building and other civil construction works.
16
.
MISCELLANEOUS GENERAL REQUIREMENTS
16.1 Dense concrete with controlled water cement ratio as per IS-code shall be used for all
underground concrete structures such as pump-house, tanks, water retaining structures,
cable and pipe trenches etc. for achieving water tightness.
16.2 All joints including construction and expansion joints for the water retaining structures
shall be made water tight by using PVC ribbed water stops with central bulb. However,
kicker type (externally placed) PVC water stops shall be used for the base slab and in
other areas where it is required to facilitate concreting. The minimum thickness of PVC
water stops shall be 5 mm and minimum width shall be 230 mm.
16.3 All mild steel parts used in the water retaining structures shall be hot-double dip
galvanized. The minimum coating of the zinc shall be 610 gm/sqm. for galvanized
structures and shall comply with IS:2629 and IS:2633. Galvanizing shall be checked
and tested in accordance with IS:2633. The galvanizing shall be followed by the
application of an etching primer and dipping in black bitumen in accordance with
BS:3416.
16.4 A screed concrete layer not less than 100 mm thick and of grade not weaker than M10
conforming to IS:456-1978 shall be provided below all water retaining structures. A
sliding layer of bitumen paper or craft paper shall be provided over the screed layer to
destroy the bond between the screed and the base slab concrete of the water retaining
structures.
16.5 Bricks having minimum 100 kg/cm2 compressive strength can only be used for
masonry work. Contractor shall ascertain himself at site regarding the availability of
bricks of minimum 100 kg/cm2 compressive strength before submitting his offer.
16.6 Doors and windows on external walls of the building (other than areas provided, with
insulated metal claddings) shall be provided with RCC sunshade over the openings
with 150 mm projection on either side of the openings. Projection of sunshade from the
wall shall be minimum 600mm over window & door openings.
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16.7 RCC staircase shall be provided for access to roof of the building. All stairs shall have
maximum riser height of 150 mm and a minimum tread width of 300 mm Minimum
width of stairs shall be 1500 mm. Steel doors shall be provided in the Mumty and height
of Mumty should be 2.6m.
16.8 Angles 50x50x6 mm (minimum) with lugs shall be provided for edge protection all
round cut outs/openings in floor slab, edges of drains supporting grating covers, edges
of RCC cable/pipe trenches supporting covers, edges of manholes supporting covers,
supporting edges of manhole precast cover and any other place where breakage of
comers of concrete is expected.
16.9 Anti termite chemical treatment shall be given to column pits, wall trenches,
foundations of buildings, filling below the floors etc. as per IS: 6313 and other relevant
Indian Standards.
16.10 The handrail of staircase shall be 0.9 m average height comprising of 20 mm square
bars of length 1.05 m and 150 mm centre to centre with 50 mm diameter MS pipe on
top of railing including fixing of vertical bars in steps by grouting of required hold fast as
per direction of Engineer in Charge.
16.11 All underground water retaining concrete structures shall have water proofing cement
additive conforming to IS: 2645 water proofing for walls and base slab of all
underground concrete structures like basements pump houses etc. shall be by
"Injection Method”.
16.12 All buildings shall have 750mm wide plinth protection all round.
16.13 Monorails, Monorail girders and fixtures shall be provided by the Bidder wherever
required.
16.14 All foundations embedment, inserts, blockouts required for equipments shall be
provided by bidder.
16.15 50mm thick DPC shall be provided before laying of masonry (item no. 4.11 & 4.13DSR 2012).
16.16 The details given in tender drawings shall be considered along with details available in
this section of the specification while deciding various components of the building.
Items/components of buildings not explicitly covered in the specification but required for
completion of the project shall be deemed to be included in the scope
17
INTERFACING
The proper coordination & execution of all interfacing civil works activities like fixing of
conduits in roofs/walls/floors, fixing of lighting fixtures, fixing of supports/embedments,
provision of cutouts etc for indoor illumination, ventilation & Air conditioning shall be the
sole responsibility of the Contractor. He shall plan all such activities in advance and
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execute in such a manner that interfacing activities do not become bottlenecks and
dismantling, breakage etc. is reduced to minimum
18
FIELD QUALITY PLAN FOR CIVIL WORKS
The field quality plan for all civil works shall be in accordance with CPWD specification
and other relevant Indian Standard Codes. All quality checks and procedures shall be
followed as per relevant CPWD norms.
19
WATER SUPPLY
19.1 Water for construction work as well as drinking purpose shall be in the scope of
contractor.
19.2 The Contractor shall carry out all the plumbing/erection works required for supply of
water in control room building beyond the single point as at (i).
19.3 A scheme shall be prepared by the Contractor indicating the layout and details of water
supply which shall be got approved by the Owner before actual start of' work including
all other incidental items not shown or specified but as may be required for complete
performance of the works.
19.4 Bore wells and pumps for water supply shall be in the scope of contractor. Although
contractor shall provide an underground water reservoir, near the gate of minimum 50
M3 or sufficient capacity for refill of one fire Tanker. The water reservoir shall be
provided with a high-pressure pump and single point fire hydrant outlet for refilling the
fire tender in case of fire and emergency. Necessary valve shall be provided in the
outlet.
19.5
The details of tanks, pipes, fittings, fixtures etc for water supply shall be approved by
engineer in charge.
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20
SEWERAGE SYSTEM
20.1 Sewerage system shall be provided for control room building.
20.2 The Contractor shall construct septic tank and soak pit suitable for 50 users or make
connection with nearby existing sewerage system of Civic agencies
20.3 The system shall be designed as per relevant IS Codes.
20.4 External sewerage system including connection with internal services of building shall
be within the scope of this contract. The connection and laying of sewer lines and
manholes upto the point of connection with the sewer line of local civic agency if
existing within 100m from any point of boundary of sub-station. If the sewer line of local
civic agency does not exist in the area then septic tank with soak pit shall be
constructed for control room building (suitable for 50 users). BRPL shall obtain
necessary approval from civic agency for laying of sewer lines as aforesaid and
connection thereof. Any municipal charges for approval and connection shall be paid
by BRPL directly to the local authorities.
21
Rain Water Harvesting
(a) Providing two numbers recharge structures with bore wells for rainwater harvesting.
The recharge structures shall be suitably located within the sub-station. Branch
drains from the main drain carrying rainwater from entire switchyard, constructed in
accordance with clause 5 & 14 shall be connected to the recharge structures.
(b) The internal diameter of recharge shafts shall be 4.5 meter with 230mm thick lining of
brick work upto a depth of 2.0 meter from ground level and 345mm thick brickwork
below 2.0 meter depth. The brickwork shall be constructed with cement mortar 1:6
(1cement: 6 coarse sand). The overall depth of shaft shall be 5.0 meter below invert
level of drain. The shaft shall be covered with RCC slab for a live load of 300 kg. per
sqm. Two openings of size 0.7 x 0.7 meter shall be provided in the RCC cover slab.
An iron cover made of 5mm thick chequered plate with hinges shall be provided on
the openings. Galvanized M.S. rungs of 16mm diameter at spacing of 300 mm shall
be provided in the wall of shaft below the opening in the RCC slab to facilitate
cleaning of shaft.
(c) A 300 mm diameter bore well shall be drilled in the centre of the shaft. The depth of
bore well shall be 5.0 meter more than the depth of sub soil water.
(d) A 100 mm diameter medium duty MS pipe conforming to IS: 1161 shall be lowered in
the bore well keeping bail plug towards bottom of bore well. The pipe shall have
1.58mm holes for 4.0 meter length starting from 1.0 meter from bottom of bore well.
Holes of 3.0mm diameter shall be provided for a length of 2.0 meter starting from the
bottom level of coarse sand and down wards. The overall length of pipe shall be
equal to total depth of bore well plus depth of shaft.
(e) Gravel of size 3mm to 6mm shall be filled around 100 diameter MS pipe in the bore
well. The shaft shall be filled with 500 mm thick layers each from the bottom of shaft
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with boulders of size 50mm to 150mm, gravel of size 5mm to 10mm, coarse sand
having particle size 1.5mm to 2.0mm and boulders of size not less than 200mm
respectively.
(f) Drawing based on above details of recharge structure for rainwater harvesting has to
be prepared by contractor and to be approved from engineer in charge.
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22
STATUTORY RULES
22.1 Contractor shall comply with all the applicable statutory rules pertaining to factories act
(as applicable far the State). Fire Safety Rules of Tariff Advisory Committee. Water Act
for pollution control, Energy Conservation Act, etc.
22.2 Provisions for fire proof doors, no. of staircases, fire separation wall. plastering on
structural members (in fire prone areas) etc. shall be made according to the
recommendations of Tariff Advisory Committee.
22.3 Statutory clearance and norms of State Pollution Control Board shall be followed as per
Water Act for effluent quality from plant.
22.4 Foundation system adopted by Bidder shall ensure that relative settlement and other
criteria shall be as per provision in IS: 1904 and other Indian Standards.
22.5 All water retaining structures designed as uncracked section shall also be tested for
water tightness at full water level in accordance with clause no. 10 of IS :33 70 (Part-I).
22.6 Construction joints shall be as per IS: 456.
22.7 All underground concrete structures like basements, pumps houses, water retaining
structures etc. shall have plasticizer cum water proofing cement additive conforming to
18:9103. In addition, limit on permeability as given in 18:2645 shall also be met with.
The concrete surface of these structures in contact with earth shall also be provided
with two coat of bituminous painting for water/damp proofing. In case of water leakage
in the above structures, Injection Method shall be applied for repairing the leakage.
22.8
All building/construction materials shall conform to the best quality specified in CPWD
specifications if not otherwise mentioned in this specification.
22.9
All tests as required in the standard field quality plans of CPWD or as per sound
engineering practices have to be carried out.
22.10 The type and treatment of all foundation shall be as per recommendation of geotechnical investigation reports.
23
DEVIATIONS
Deviation from this specification, if any, shall be clearly brought out in the offer. Unless owner
explicitly accepts such deviations, it shall be considered that the offer fully complies with the
specification.
41
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for Civil Work
Table – 1 Internal Finish Schedule
No
1
2
3
4
Location
Flooring &
Skirting
150mm high
Control room
Homogenous
PVC Sheet
2mm thick over
52 mm thick
CC flooring
with concrete
hardener
topping (item
no. 11.4- DSR
2012)
Reception
Lobby/
Maintenance
Room
Battery
Room
Toilet,
Wall Internal
Plastic emulsion
Paint on
smooth surface
applied with
putty
Ceiling
Oil bound
washable
distemper
on smooth
surface
applied
with putty
Kota stone
Oil bound
washable
distemper on
smooth surface
applied with
putty
Oil bound
washable
distemper
on smooth
surface
applied
with putty
Acid proof tile
flooring (item
no. 11.21- DSR
2012)
DADO with acid
proof tiles upto
2.1m high (item
no. 11.21- DSR
2012). Acid proof
paint above 2.1m
upto ceiling.
Oil bound
washable
distemper
on smooth
surface
applied
with putty
Anti skid
ceramic tiles
with white
cement.
DADO glazed tile
2.1m high for
toilet for pantry
above working
platform up to
750mm.
Oil bound
washable
distemper
on smooth
surface
applied
with putty
42
Doors, Windows,
Ventilators
Anodized Aluminium
Indal or equivalent
extruded sections as per
IS 733 & 1285. Glazing
with float glass (min
5.5mm thick). For
windows double glazing
with 12mm gap
hermetically sealed
(anodizing in 20 micron,
bronze matt colour).
Anodized Aluminium
Indal or equivalent
extruded sections as per
IS 733 & 1285. Glazing
with float glass (min
5.5mm thick). For
windows double glazing
with 12mm gap
hermetically sealed
(anodizing in 20 micron,
bronze matt colour)
Anodized Aluminium
Indal or equivalent
extruded sections as per
IS 733 & 1285. Glazing
with float glass (min
5.5mm thick). For
windows double glazing
with 12mm gap
hermetically sealed
(anodizing in 20 micron,
bronze matt colour).
Anodized Aluminium
Indal or equivalent
extruded sections as per
IS 733 & 1285. Glazing
with float glass (min
5.5mm thick). For
windows double glazing
with 12mm gap
hermetically sealed
(anodizing in 20 micron,
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for Civil Work
bronze matt colour).
5
Stair
Kota stone
Oil bound
washable
distemper on
smooth surface
applied with putty
6
Other areas
not specified
Ceramic glazed
tiles with white
cement
Oil bound
washable
distemper
7
8
9
10
11
12
13
Waist
slab bottom
face white
wash
inside
Oil bound
washable
distemper
Anodized Aluminium
Indal or equivalent
extruded sections as per
IS 733 & 1285. Glazing
with float glass (min
5.5mm thick). For
windows double glazing
with 12mm gap
hermetically sealed
(anodizing in 20 micron,
bronze matt colour).
Anodized Aluminium
Indal or equivalent
extruded sections as per
Oil bound
IS 733 & 1285. Glazing
washable
Oil bound
with float glass (min
Switchgear
distemper on
washable
5.5mm thick). For
room
smooth surface
distemper
windows double glazing
applied with putty
with 12mm gap
hermetically sealed
(anodizing in 20 micron,
bronze matt colour).
The External finishing of Control room building will be of Stone grit/ Wash Marble chip of
approved color and quality with color pigments using white / grey cement or combination of
both.
External finishing of the building on area other than the area of stone grit/ Wash Marble using
Acrylic Smooth exterior paint (painting) shall be Nerolac excel.or equivalent The paint shade
as approved by BRPL
Provision of rain water harvesting system is to be made with two pits at different locations as
per approved drawing.
Provision of permanent Security Gumtee (approx. 9 SQM area) is to be made as per standard
approved design.
Internal wiring along with fittings and fixtures and control panel boards, main switch MCB’s
etc.
BSES Display board is to be provided of required size and as per approved pattern /drawing
of BRPL with name of the grid.
52 mm thick
CC flooring
with concrete
hardener
topping (item
no. 11.4- DSR
2012) over an
under layer of
RCC/CC.
14
Water and Sewer line connections to be done along with approval of CIVIC agency.
15
Provision of pantry is to be made.
43
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for Civil Work
16
Provision of sump and pump is to be done for disposal of rain water from trench.
17
Construction of RCC NIFPS tank and Brick pedestals for panel as per approved design and
size as per Manufacturer’s specification.
44
BSES Bhawan, Nehru Place, New Delhi- 19
TECHNICAL SPECIFICATION FOR STATION TRANSFORMER 1.0
CODES & STANDARDS:
Prepared by
Supriya Raina
Reviewed by
Meenakshi
Approved by
Kiran K Alla
Rev: 1
Date: 25.11.2013
45
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification For Station Transformer
1.0 CODES & STANDARDS:
Material, equipment and methods used in the manufacturing of Station Transformer shall
confirm the latest edition of following standard: Standard Name / No.
Standard’s Description
IEC Standards
IEC 60034
Rotating Electrical Machines. (E.g. For Cooler Fan Motors.)
IEC 60071
Co-ordination of Insulation.
IEC 60076
Power transformers
IEC 60156
Method for Determination of the Electric Strength for Insulating Oils.
IEC 60044
Current Transformers.
IEC 60214
On-Load Tap- Changer
IEC 60296
Specification for Unused Mineral Insulating Oils for Transformer and
switchgear.
IEC 60354
Loading Guide for Oil-Immersed Power Transformers.
IEC 60445
Basic & safety principles for man-machine interface, making
Identification of Equipment Terminals and Conductors termination.
IEC 60529
Degrees of Protection Provided by Enclosures (IP Code)
IEC 60551
Determination of Transformer and Reactor Sound Levels.
IEC 60606
Application Guide for Power Transformer.
IEC 60616
Terminal and Tapping Markings for Power Transformers.
IEC 60947
Low- Voltage Switchgear and Control Gear.
IEC 60137
Bushing for alternating voltage above 1000V.
British Standards
BS 148
Unused Mineral Insulation Oils for Transformers and Switchgear.
BS 223
Bushings for alternating Voltages above 1000 V.
BS 2562
Cable Boxes for Transformers and Reactors.
Indian Standard
IS 335
Insulating oil
IS 1271
Thermal evaluation and classification of electrical insulation
IS 2099
Bushing for Alternating voltage above 1000V
IS 2705
Current Transformers
IS 3347
Dimensions for porcelain Transformer bushing
IS 3637
Gas operated relays
46
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification For Station Transformer
IS 3639
Fitting & Accessories for power transformers
IS 4201
Application guide for CT’s
IS 6600
Guide for loading of oil immersed transformers
IS 8478
Application guide for On-Load Tap Changer
IS 8468
On-Load Tap Changer
IS 10028
Code of practice for selection, installation & maintenance of
transformers
IS 13947
LV switchgear and control gear part-1
IS 2026
Power Transformers
IS 6272
Industrial Cooling Fans
IS 5
Colours for ready mix paints
IS 5561
Electrical power connectors
IS 325
Three phase induction motors.
Indian Electricity Rules 1956 (relevant safety regulation of CEA)
Indian Electricity Act 2003
CBIP manual
In the event of direct conflict between various order documents, the precedence of authority of
documents shall be as follows:
1)
2)
3)
4)
5)
Guaranteed Technical Particulars (GTP)
This Specification
Indian Standards / IEC Standards
Approved Vendor Drawings
Other documents
47
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification For Station Transformer
2.0
MAJOR DESIGN CRITERIA & PARAMETERS OF THE TRANSFORMER
In the event of direct conflict between various order documents, the precedence of authority
of documents shall be as follows –
2.1
2.1.1
2.1.2
Major design parameters
Voltage variation on supply
side
Frequency variation on supply
side
2.1.3
Transient condition
2.1.4
2.1.5
2.1.6
2.1.7
2.1.8
2.1.9
2.1.10
2.1.11
Service condition
Insulation level
Short circuit withstand level
Overload capability
Noise level
Radio influence voltage
Harmonic currents
Partial discharge
2.1.12
Parallel operation
2.2
2.2.1
2.2.2
2.2.3
2.2.4
2.2.5
2.2.5.1
2.2.5.2
2.2.6
2.2.7
2.2.8
2.2.9
2.2.10
2.2.11
Major parameters
Rating
Voltage ratio
Vector group
Impedance
Losses
No load loss
Load losses at principal tap
Temperature rise top oil
Temperature rise winding
Flux density
Current density
Tapping on HV winding
Design clearances
+ / - 10%
+ / - 5%
- 20% or + 10% combined variation of voltage and
frequency
Refer Project data “General Service condition”
Refer Annexure A
Refer Annexure A
Refer Annexure A
Refer Annexure A
Refer Annexure A
Refer Annexure A
Refer Annexure A
Shall be designed to operate in parallel with
transformer.
Refer Annexure A
Refer Annexure A
Refer Annexure A
Refer Annexure A
Refer Annexure A
Refer Annexure A
Refer Annexure A
Refer Schedule C6
Refer Schedule C6
Refer Schedule C6
Refer Schedule C6
Refer Annexure A
Refer Annexure A & Schedule C6
48
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification For Station Transformer
3.0
CONSTRUCTION & DESIGN
3.1
3.2
3.2.1
3.2.1.1
Type
Major parts
Tank
Type
Double Copper wound, three phase, oil immersed ,
with ONAN cooling, with Off Circuit Tap Changer
3.2.1.1.1
Type for normal oil filled
Non sealed type with conservation as per
manufacturer’s standard.
3.2.1.2
Material of construction
As per GTP
3.2.1.3
Plate thickness
3.2.1.4
Welding features
3.2.1.5
Tank features
3.2.1.6
Flanged type adequately
sized inspection cover
rectangular in shape
required for
3.2.1.7
Fittings and accessories on
main tank
3.2.2
Conservator for the main
tank
Adequate for meeting the requirements of pressure
and vacuum type tests as per CBIP
1) All seams and joints shall be double welded
2) All welding shall be stress relieved for sheet
thickness greater than 35mm
3) All pipes, radiators, stiffeners, welded to the tank
shall be welded externally
1) Adequate space at bottom for collection of
sediments
2) Stiffeners provided for rigidity shall be adequately
sloped to prevent accumulation of water
3) No internal pockets in which gas / air can
accumulate
4) No external pockets in which water can lodge
5) Tank bottom with welded skid base
6) Tank cover sloped to prevent retention of rain water
7) Minimum disconnection of pipe work and
accessories for cover lifting
8) Tanks shall be of a strength to prevent permanent
deformation during lifting, jacking, transportation with
oil filled
9) Tank to be designed for oil filling under vacuum
10) Fitted with lifting lug to lift the tank cover only
1) HV line bushing
2) LV line bushing
3) LV neutral bushing
4) Core / Winding
See under fittings and accessories (Clause No-4.0)
3.2.2.1
Capacity
Adequate between highest and lowest visible levels to
meet the requirement of expansion of oil volume in the
transformer and cooling equipment from minimum
ambient temperature to 1000 C
3.2.2.2
Conservator oil
preservation system
Conventional
3.2.2.3
Conservator features
1) Conservator shall be bolted in such position that it
can be removed for cleaning / other maintenance
49
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Volume – I Technical Specification For Station Transformer
3.2.2.4
Fittings and accessories on
main tank conservator
3.2.3
3.2.3.1
3.2.3.2
3.2.4
Radiators
Thickness
Features
Core
3.2.4.1
Material
3.2.4.2
3.2.4.3
Grade
Lamination thickness
Design flux density at rated
conditions at principal tap
Maximum flux density at
10% over excitation / over
fluxing
3.2.4.4
3.2.4.5
3.2.4.6
3.2.5
Core design features
Winding
purposes
2) Main pipe from tank shall be about 20 mm above
conservator bottom for creating a sump for
collection of impurities
3) Conservator minimum oil level corresponding to
minimum temperature shall be above the sump level
4) Conservator to main tank piping shall be supported
at minimum two points.
1) Prismatic oil gauge with NORMAL, MINIMUM and
MAXIMUM marking
2) End cover
3) Oil filling hole with cap
4) Silica Gel dehydrating breather with Oil seal and
dust filter with clear acrylic single piece clearly
transparent cover resistant to UV rays.
5) Drain Plug
6) Air release plug as required
7) Pressure/ Vacuum gauge
Detachable type
1.2 mm (min)
With lifting lugs, air release plug, drain plug
High grade, non ageing, low loss, high permeability,
grain oriented, cold rolled silicon steel lamination
Premium grade min M4 or better
As per Schedule C6 of Station Transformer
As per Schedule C6 of Station Transformer
1.9 Tesla
1) Magnetic circuit designed to avoid short circuit
paths within core or to the earthed clamping structure
2) Magnetic circuit shall not produce flux components
at right angles to the plane of lamination to avoid local
heating
3) Least possible air gap and rigid clamping for
minimum core loss and noise generation
4) Adequately braced to withstand bolted faults on
secondary terminals without mechanical damage and
damage / dis-placement during transportation and
positioning
5) Percentage harmonic potential with the maximum
flux density under any condition limited to avoid
capacitor overloading in the system
6) All steel sections used for supporting the core shall
be thoroughly sand blasted after cutting, drilling,
welding
7) Provision of lifting lugs for core coil assembly
8) Supporting framework designed not to obstruct
complete drainage of oil from transformer.
50
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Volume – I Technical Specification For Station Transformer
3.2.5.1
3.2.5.2
Material
Maximum current density
allowed
3.2.5.3
Winding Insulating material
3.2.5.4
Winding Insulation
3.2.5.5
Design features
3.2.6
Transformer Oil
3.2.6.1
3.2.7
Type
Bushings and
Terminations
3.2.7.1
Type of HV Side bushing
3.2.7.2
Type of LV Side bushing
3.2.7.2.1
Essential provision for LV
side line bushing
3.2.7.2.2
Essential provision for LV
side neutral bushing
3.2.7.3
3.2.7.4
Type below 52 kV
Arcing Horns
3.2.7.5
Termination on HV side
bushing
3.2.7.6
Termination of LV side
bushing
Electrolytic Copper
Maximum allowed 3.0 A per Sq mm at all taps.
Class A, non catalytic, inert to transformer oil, free
from compounds liable to ooze out, shrink or collapse
Uniform
1) Stacks of winding to receive adequate shrinkage
treatment
2) Connection braced to withstand shock during
transport, switching, short circuit, or other transients.
3) Minimum out of balance force in the transformer
winding at all voltage ratios.
4) Conductor width on edge exceeding six times its
thickness
5) Transposed at sufficient intervals.
6) Coil assembly shall be suitably supported between
adjacent sections by insulating spacers/barriers.
7) Winding leads rigidly supported, using guide tubes
8) Winding structure and major insulation not to
obstruct free flow of oil through ducts
9) Provision of taps as indicated in the general
technical particulars (Annexure-A)
Should be in accordance to Annexure B of this spec.
One sample of oil drawn from every lot of transformer
offered for inspection should be tested at NABL
accredited lab for tests as listed under Table – 1 of IS
1866 (2000). The cost of this testing should be
included within the bid. Test results shall be confirming
to the Annexure B of this spec.
Outdoor, Epoxy Resin cast, rated voltage and
creepage shall be 12KV & 31 mm/KV respectively.
Outdoor, Epoxy Resin cast, rated voltage and
creepage shall be 1.1 KV & 31 mm/KV respectively
It shall be complete with copper palm complete with
tinned copper busbar of size shall be 100mmX12mm
for cable connection.
In case of neutral bushing the stem and busbar shall
be integral without bolted, threaded, brazed joints.
Busbar size shall be 100mmX12mm for Cable
connection.
Oil communicating , outdoor, removable
Not required
By bimetallic terminal connectors suitable for ACSR/
AAAC conductor / Cable connection through cable box
with disconnecting link suitable for 11KV (E) grade,
A2XCEWY 3C x 150 sqmm XLPE
By bimetallic terminal connectors suitable for ACSR/
AAAC conductor / Cable connection suitable for 1.1 kV
(E) grade 2 x 4C x 300 Sqmm XLPE
51
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Volume – I Technical Specification For Station Transformer
3.2.7.7
3.2.7.8
3.2.7.9
3.2.7.10
3.2.7.11
3.2.7.12
3.2.7.13
3.2.8
Minimum creepage
distance of bushing
Protected creepage
distance
Continuous Current rating
Rated thermal short time
current
Atmospheric protection for
clamp and fitting of iron and
steel
Bushing terminal lugs in oil
and air
Sealing washers /Gasket
ring
HV, LV, LV Neutral cable
box
3.2.8.1
Material of construction
3.2.8.2
Cable entry
3.2.8.3
3.2.8.4
Cable size for HV
Cable size for LV
3.2.8.5
Cable size for LV neutral
3.2.8.6
3.2.8.7
3.2.8.8
3.2.8.9
Detachable gland plate
material for HV,LV, LV
Neutral box
Gland plate thickness for
LV, LV Neutral box
Cable gland for LV, LV
Neutral cables
Cable lug for LV, LV
Neutral
3.2.8.10
Essential parts
3.2.8.11
Terminal Clearances
Termination height required
for cable termination
Current Transformers
3.2.8.12
3.2.9
31 mm / kV
At least 50 % of total creepage distance
Minimum 20 % higher than the current corresponding
to the minimum tap of the transformer
25 times rated current for 2 sec for both winding
(HV&LV)
Hot dip galvanizing as per IS 2633
Tinned copper
Nitrile rubber/Expanded TEFLON(PTFE) as applicable
Required
Sheet Steel min 4 mm thick. Inspection Covers shall
be min 3mm thick
At bottom through detachable gland plate with cable
clamps of non magnetic material
1X 3CX 150mm2, XLPE A2XCEWY 11 KV (E)
2X 4CX 300mm2, XLPE 1.1 kV (E)
Separate cable box is not required (LV-N to be
provided in LV cable box)
MS
3 mm (Min)
As per 4.8 of this Specification & suitable for cable size
1X 3CX 150mm2, XLPE A2XCEWY 11 KV (E)
As per 4.9 of this Specification and 2X 4CX 300mm2,
XLPE 1.1 kV (E)
1) Flange type removable front cover with handles min
two nos.
2) Tinned Copper busbar of adequate size for
purchaser’s cable termination with busbar supports
3) Earthing boss for the cable box
4) Earthing link for the gasketted joints at two points
for each joint
5) Earthing provision for cable armour / screen
6) Flange type Inspection cover on top for bushing
inspection and maintenance with handle
7) Drain plug
8) Rainhood on gasketted vertical joint
9) Danger / caution plate
As per Annexure A of general technical particulars
Minimum 1000 mm (LV Box)
Minimum 700 mm (HV Box)
52
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Volume – I Technical Specification For Station Transformer
3.2.9.1
Provision
3.2.9.2
Mounting
3.2.9.3
Maintenance requirements
3.2.9.4
3.2.9.5
3.2.9.6
3.2.9.7
3.2.9.8
3.2.9.8.1
3.2.9.8.5
Accuracy Class
Burden
Type
CT ratio
CT terminal Box
Size
Fixing of instrument /meters
with in box
No. of horizontal channels
to be provided
Fixing of terminals within
the box
Location
3.2.9.8.6
Box door design
3.2.9.8.7
3.2.9.8.8
3.2.9.8.9
3.2.9.8.10
3.2.9.8.11
Terminal strip
Cable and wires
Cable Glands
Lugs on wires
Potential signal in CT box
3.2.9.8.12
Essential provision
3.2.9.8.2
3.2.9.8.3
3.2.9.8.4
3.2.11
Off Circuit tap Switch
3.2.11.1
Range / Step
3.2.11.2
3.2.11.3
Type
Operating Voltage
Rated current for tap
Switch
3.2.11.4
3.2.11.5
Operating Handle
3.2.11.6
Essential provision
3.2.12
3.2.12.1
3.2.12.2
Pressure Relief Device
Type
Provision on explosion vent
3.3
All three phases of LV side
On LV side bushing an all three phases with the help
of fibre glass mounting plate affixed to main tank by
nut bolt arrangement.
Replacement should be possible by removing fixing
nut of mounting plate after removal of LT cable without
disturbing LT bushing.
0.5
15 VA
Cast resin ring type suitable for outdoor use
600/5 for 400 KVA
.
650 mm height X450 mm width X275 mm depth
On slotted channel 40X12 mm size, channel fixed on
vertical slotted angle 40x40mm size at two ends
Four
On horizontal slotted channel with the help of C
channel available with the terminals
On tank wall
Openable from outside with antitheft hinge, padlock
facility, door fixed by stainless steel allen screw M6
size, Door shall have canopy for rain protection.
As per Cl. No. 3.7 of this specification
As per Cl. No. 3.6.1 & 3.6.2 of this specification
As per Cl. No. 3.8 of this specification
As per Cl. No. 3.9 of this specification
Tapped from main LV busbars
Wiring diagram to be fixed on the back of door along
with CT Sec. on Aluminum engraved plate fixed by
rivet.
Off Circuit taps on HV winding +/- 5 % in steps of 2.5
%, change by externally operated switch.
Rotary type, 3 pole gang operated, draw out type
11 KV
60 Amp for 400 KVA
External at suitable height to be operated from ground
level.
Tap position indicator, direction changing facility,
locking arrangement, and caution plate metallic fixed
by rivet.
Explosion vent
Double diaphragm & sight glass
Hardware
3.3.1
External
3.3.2
Internal
Stainless Steel
Cadmium plated except special hardware for frame
parts and core assembly as per manufacture’s design
53
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Volume – I Technical Specification For Station Transformer
3.4
3.4.1
3.4.2
3.5
Gasket
For transformer, surfaces
interfacing with oil like
inspection cover etc.
For cable boxes,
marshalling box, etc.
Valves
3.5.1
Material of construction
3.5.2
Type
3.5.3
Size
3.5.4
Essential provision
3.6
Cable routing on
Transformer
Nitrile rubber based
Neoprene rubber based
Brass / gun metal
Both end flanged gate valve / butterfly valve
depending on application
As per manufacture’s standard
Position indicator, locking rod, padlocking facility, valve
guard, cover plate.
Control cable for accessories on transformer tank to
marshalling box and WTI, OTI Capillaries shall be
routed through perforated GI covered trays
3.6.1
Control cable specification
PVC insulated, extruded PVC inner sheathed,
armoured, extruded PVC outer sheathed 1100 V grade
control cable as per latest edition of IS 1554 Part 1
minimum 2.5 sqmm for signals and 4 sqmm for CT
with multi strand copper conductor
3.6.2
Specification of wires to be
used inside marshalling
box, OLTC drive
mechanism.
PVC insulated multi strand flexible copper wires of
minimum 2.5 sqmm size, 1100 V grade as per latest
edition of relevant IS
3.7
Terminal Blocks to be
used by the vendor
Nylon 66 material, minimum 4 sq mm, screw type for
control wiring and potential circuit. Terminal blocks to
be located in such a way to achieve the termination
height as min 250mm from gland plate
Sliding link type disconnecting terminal block
screwdriver operated stud type with facility for CT
terminal
shorting
material
of
housing
melamine/Nylon66
Nickel plated brass double compression weather proof
cable gland
3.7.1
Essential provision for CT
terminals
3.8
Cable glands to used by
the vendor
3.9
Cable lugs to be used by the vendor
Long barrel medium duty Aluminium lug with knurling
on inside surface
Tinned copper pre insulated Pin Ring, Fork type as
application For CT connection ring type lug shall be
used.
3.9.1
For power cables
3.9.2
For control cable
3.10
Painting of transformer, Radiator, cable boxes, marshalling box for CT.
3.10.1
Surface preparation
3.10.2
Finish on internal surfaces
of the transformer
interfacing with oil
By 7 tank pretreatment process or shot blasting
method
Bright Yellow heat resistance and oil resistant paint
two coats. Paint shall neither react nor dissolve in hot
transformer insulating oil.
54
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Volume – I Technical Specification For Station Transformer
3.10.3
3.10.4
3.10.5
4.0
Frame parts
Finish on inner surface of
the CT terminal box,
HV/LV/LVN cable box
Finish on outer surface of
the transformer, radiator,
cable boxes, CT terminal
box ,HV/LV/LVN cable box
Battle ship Grey shade 692 IS 5, 80 micron minimum
insulating oil resistant paint. Paint shall neither react
nor dissolve in hot transformer insulating oil.
White Polyurethane paint anti condensation type two
costs, minimum dry film thickness 80 microns
Battle ship Grey shade 692 Polyurethane paint two
coats, minimum dry film thickness 80 microns
FITTINGS AND ACCESSORIES ON TRANSFORMER
4.1
4.1.1
4.1.2
4.1.3
4.1.4
Rating and diagram plate
Material
Background
Letters, diagram & border
Process
4.1.5
Ratings and Name plate details
Required
Anodized Aluminium 16SWG
SATIN SILVER
Black
Etching
Following details shall be provided on rating
and diagram plate as a minimum
1. Type / kind of transformer with
winding material
2. Standard to which it is manufactured
3. Manufacture’s name
4. Transformer serial number
5. Month and year manufacture
6. Rated frequency in Hz
7. Rated voltages in KV
8. Number of phases
9. Rated power in KVA
10. Type of cooling (ONAN)
11. Rated currents in A
12. Vector group symbol
13. 1.2/50 μs wave impulse voltage
withstand level in kV
14. Power frequency withstand voltage in
kV
15. Impedance voltage at rated current
and frequency in percentage at
principal, minimum and maximum tap
16. Load loss at rated current
17. No load loss at rated voltage and
frequency
18. Continuous ambient temperature at
which ratings apply in ˚C
19. Top oil and winding temperature rise
at rated load in deg C
20. Winding connection diagram with taps
and table of tapping voltage, current
and power
21. Transport weight of transformer
22. Weight of core and winding
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BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification For Station Transformer
23.
24.
25.
26.
27.
28.
4.2
4.3
4.4
4.5
4.6
4.7
4.8
Terminal marking plate for bushing
anodized Aluminium black lettering on
satin silver background both inside cable
boxes near termination and on cable box
cover (all fixed by rivet)
Company monogram plate fixed by rivet
Lifting lug to lift complete transformer with
oil
Lifting lugs for top cover
Lashing lug
Jacking pad with Haulage hole to raise or
lower complete transformer with oil
Detachable bi-directional roller assembly
4.8.1
Roller center to center distance
4.8.1
Essential provision
4.9
4.10
4.11
4.12
4.13
4.14
4.15
4.16
Pockets for ordinary thermometer on tank
cover with metallic identification plate
fixed by rivet .top and bottom header of
radiator, top of each radiator
Drain valve (gate valve) for the main tank
with cork above ground by 150mm min
with padlocking and valve guard with
metallic identification plate fixed by rivet
Filter valve (gate valve) at top with pad
locking and valve guard with metallic
identification plate fixed by rivet
Air Release Plug on tank cover with
metallic identification plate fixed by rivet.
Equalizer pipe connection between
conservator and explosion vent
Earthing pad on tank for transformer
earthing complete with non ferrous nut,
bolt, washers, spring washers with
metallic identification plate fixed by rivet
Rain hood for vertical gasketted joints, in
cable boxes,conservator
Earthing bridge by copper strip jumpers
on all gasketted joints at least two points
for electrical continuity
56
Total weight
Volume of oil
Weight of oil
Name of the Purchaser
PO no and date
Guarantee period
Required
Required
Required
Required
Required
Required
Required
Min 900 mm on the side of HV and LV cable
box
Max 800 mm on the other side
(perpendicular to HV, LV cable box)
Roller dia 150 mm min. roller to be fixed in
such a way so that the lowermost part of the
skid is above ground by at least 100 mm
when the transformer is in stalled on roller.
Required
Required
Required
Required
Required
Required
Required/not required as per annexure scope
of supply
Required
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification For Station Transformer
4.17
Skid base welded type with haulage hole
Required
4.18
Core, frame to tank earthing
Required
4.19
4.20
4.21
4.22
5.0
Danger plate made of anodized
aluminium white lettering on red
background fixed by rivet
Caution Plate for off Circuit tap changer
fixed by rivet
MOG with aux contact wired up to
separate terminal box
Metering box
Required
Required
Required
Required
APPROVED MAKE AND COMPONENTS
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
5.10
5.11
CRGO
Cooper
Insulating Pressboard
Insulating Paper
Oil
Steel
CT
Bushing
MOG
Off circuit tap changer
Lugs/Glands
Nippon/JFE/Posco
Sterlite/Birla Copper
Raman Boards/Senapathy Witley
Munksjö
Apar/Savita/Raj
Jindal/Sail/TATA
Pragati / ECS/Kappa
Epoxy-Baroda bushing and Porcelain- CJI / Jaipur
Sukrut
Alwaye/Paragon
Jainson/Dowels/Comet
Note – Any other make of component to be approved by Owner
6.0
INSPECTION & TESTING
6.1
Inspection and Testing during
manufacture
6.1.1
Tank and conservator
6.1.2
Core
Only Type tested equipment shall be acceptable
1) Check correct dimension between wheels
demonstrate turning of wheels through 90 deg and
further dimensional check.
2) Check for physical properties of material for lifting
lugs, jacking pads etc. all load bearing welds,
including lifting lug welds shall be subjected to
required load tests
3) Leakage test of the conservator
4) Certification of all test results
5) Oil leakage test on all tanks at normal head of oil
plus 35 kn / sqm at the base of the tank for 24 hrs
6) Vacuum and pressure test on tank as type test as
per CBIP
1) Sample testing of core material for checking
specific loss, bend properties, magnetization
characteristics and thickness
2) Check on the quality of varnish if used on the
stampings.
a) Measurement of thickness and hardness of
varnish on stampings
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Volume – I Technical Specification For Station Transformer
6.1.3
Insulating material
6.1.4
Windings
6.1.4.1
Checks before drying process
b) Solvent resistance test to check that varnish
does not react in hot oil
c) Check over all quality of varnish by sampling to
ensure uniform hipping color, no bare spot. No
ever burnt varnish layer and no bubbles on
varnished surface
3) Check on the amount of burrs
4) Bow check on stamping
5) Check for the overlapping of stampings. Corners of
the sheet are to be apart
6) Visual and dimensional check during
assembly
stage.
7) Check on complete core for measurements of ironloss and check for any hot spot by exciting the core so
as to include the designed value of flux density in the
core
8) Check for inter laminar insulation between core
sectors before and after pressing
9) Visual and dimensional check for straightness and
roundness of core, thickness of limbs and suitability of
clamps
10) High voltage test (2KV for one minute) between
core and clamps
11) Certification of all test results
1) Sample check for physical properties of material
2) Check for dielectric strength
3) Visual and dimensional checks
4) Check for the reaction of hot oil on insulating
materials
5) Certification of all test results
1) Sample check on winding conductor for mechanical
properties and electrical conductivity
2) Visual and dimensional check on conductor for
scratches, dept. mark etc.
3) Sample check on insulating paper for PE value,
bursting strength, electric strength
4) Check for the reaction of hot oil on insulating paper
5) Check for the binding of the insulating paper on
conductor
6) Check and ensure that physical condition of all
materials taken for winding is satisfactory and free of
dust
7) Check for absence of short circuit between parallel
strands
8) Check for Brazed joints wherever applicable
9) Measurement of voltage ratio to be carried out
when core / yoke is completely restocked and all
connections are ready
10) Certification of all test results
1) Check conditions of insulation on the conductor and
between the windings
2) Check insulation distance between high voltage
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Volume – I Technical Specification For Station Transformer
6.1.4.2
Checks during drying process
connection cables and earthed and other live parts
3) Check insulation distance between low voltage
connection cables and earthed and other parts
4) Insulation test of core earthing
5) Check for proper cleanliness
6) Check tightness of coils i.e. no free movements
7) Certification of all test results
1) Measurement and recording of temperature and
drying time during Vacuum treatment.
2) Check for completeness of drying
3) Certification of all test result.
6.1.5
Oil
As per IS 335
6.1.6
Test on fittings and
accessories
As per manufacturer’s standard
6.2
Routine tests
The sequence of routine testing shall be as follows
1) Visual and dimension check for completely
assembled transformer
2) Measurements of voltage ratio
3) Measurements of winding resistance at Principal
tap and two extreme taps.
4) Vector group and polarity test
5) Measurements of insulation resistance *.
6) Separate source voltage withstand test.
7) Measurements of iron losses and exciting current at
rated frequency and 90%, 100% and 110% rated
voltage.
8) Induced voltage withstand test.
9) Load losses measurement.
10) Impedance measurement of principal tap (HV and
LV) of the transformer.
11) Routine test of tanks
12) Induced voltage withstand test (to be repeated if
type tests are conducted).
13) Measurement of iron loss (to be repeated if type
tests are conducted).
14) Measurement of capacitance and Tan Delta for
transformer oil (for all transformers).
15) Ratio of CT
16) Oil leakage test on assembled transformer
17) Magnetic balance test
18) Power frequency voltage withstand test on all
auxiliary circuits
19) Certification of all test results.
* a) Insulation resistance measurement shall be
carried out at 5 kV for HV and 1 kV for LV. Value of IR
should not be less than 1000 Mohms. Polarization
Index x (PI = IR 10min / IR 1 min) should not be less
than 1.5. ( If one minute IR value is above 5000
Mohms and it is not be possible to obtain an accurate
10 minutes reading, in such cases polarization index
can be disregarded as a measure of winding
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Volume – I Technical Specification For Station Transformer
condition.)
6.3
6.3.1
6.4
6.4.1
Type tests
Note for type test
Special Tests
Note for special test
Notification to bidders
b) Temperature rise test may be necessary to be
carried out on 5% of the order quantity (subject to
minimum 1) at the manufacturer’s works. Purchaser’s
engineer, will at his discretion, select transformer for
temp. rise test from any lot offered for inspection at
manufacturer’s works and witness the same for
comparison with ERDA/CPRI type test results.
On one transformer of each rating and type (In Govt.
recognized
independent
test
laboratory
/
Internationally accredited test lab or at manufacturer’s
facility if it is approved by component authority)
1) Impulse withstand test on all three HV and LV limbs
of the transformers for chopped wave as per standard
2) Temperature rise test as per IS
3) Dissolved gas analysis before and after
Temperature Rise test
4) Pressure and Vacuum test on tank
Cost of the above tests, if extra, shall be quoted
separately by the Bidder, which shall be considered in
the price evaluation.
On one transformer of each rating and type
1) Dynamic & thermal Short Circuit.
2) Measure of zero seq. impedance
3) Measurement of acoustic noise level
4) Measurement of harmonic level on no load current
5) High voltage withstand test shall be performed on
the auxiliary equipment and wiring after complete
assembly.
6) CRGO Testing at CPRI/ERDA for Specific core
loss, accelerated ageing test, surface insulation
resistivity, AC permeability and magnetization,
Stacking factor, ductility etc. ( This test to be
applicable if total order quantity is equal to or more
than three number)
7) Oil testing at CPRI/ERDA whose sample shall be
selected and sealed by customer inspection
engineer.
In case the product offered is never tested for
dynamic short circuit the same to be conducted by
bidder at his own cost at Govt. recognized
independent test laboratory / internationally accredited
test lab.
The product offered must be of type tested design
with valid type test report of not more than five (5)
years.
In case the product offered is never type tested the
same as per above list to be conducted by bidder at
his own cost at Govt. recognized independent test
laboratory / Internationally accredited test lab or at
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Volume – I Technical Specification For Station Transformer
manufacturer’s facility if it is approved by component
authority
Valid Type test reports for Dynamic Short circuit test
as per IS may be forwarded for customer’s review and
approval.
In case the product offered is never tested for
dynamic short circuit the same to be conducted by
bidder at his own cost at Govt. recognized
independent test laboratory / Internationally accredited
test lab.
7.0
DEVIATION
Deviation from this specification, if any, shall be clearly bought out in the offer. Unless owner
explicitly accepts such deviations, it shall be constructed that the offer fully complies with the
specification.
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Volume – I Technical Specification For Station Transformer
TECHNICAL PARTICULARS (DATA BY PURCHASER)
ANNEXURE A
Sr No
Description
Data by purchaser
1.0
Location of equipment
Generally Outdoor but may be located indoor also
with poor ventilation
2.0
Rating(kVA)
400
3.0
Rated Voltage (kV)
11/0.433
4.0
Vector Group
Dyn11
5.0
Reference design ambient temperature
50 deg C
6.0
Type
Oil immersed, core type, step down
7.0
Type of cooling
ONAN
8.0
Reference standard
IS: 2026
9.0
No. of phases
3
10.0
No. of windings per phase
2
11.0
Rated frequency ( Hz )
50 Hz
12.0
Highest system voltage HV side
12 kV
13.0
Highest system voltage LV side
460 Volts
14.0
14.1
Lightning Impulse withstand voltage , kV
peak
For nominal system voltage of 11 kV
75
15.0
Power Frequency Withstand Voltage kV rms
15.1
For nominal system voltage of 11 kV
28
15.2
For nominal system voltage of 415V
3
16
Clearances Phase to Phase , mm
16.1
For nominal system voltage of 11 kV
180
16.2
For nominal system voltage of 415V
25
17
Clearances Phase to Earth , mm
17.1
For nominal system voltage of 11 kV
120
17.2
For nominal system voltage of 415V
25
18
System Fault Level , HV side
350 MVA
19
System Fault Level , LV side
35 MVA
17.0
System earthing
17.1
HV
Solidly earthed
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Volume – I Technical Specification For Station Transformer
17.2
LV
Solidly earthed
18.0
Percentage Impedance at 75Deg C
5% with IS Tolerance
19.0
Max No Load Losses,kW
0.7
20.0
Max full Load Losses at 75Deg C ,kW
5.1
21
Phase CT Ratio ,Amps
600/5
22.0
HV cable size for all sizes/conductor size
11kV(E) Grade,A2XCEWY ,3Cx150sqmm
22.1
Tinned copper bus bar size on HV side cable
termination ,mmxmm LV side
LV Cable size,650/1100V Grade, A2XY
cable 4Cx300sqmm armoured
50x6
23.0
2 runs per phase + 2runs in Neutral
24.0
Tinned copper busbar size on LV side for
cable termination,mmxmm
24.1
Phase
100x12
24.2
Neutral
100x12
25.0
Maximum
Overall
Dimensions
Acceptable(lengthxwidthxheight)
mmxmmxmm
Short Circuit withstand Capacity of the
transformer
1700x1500x1700
For 3 secs.
27.0
Three phase dead short circuit at secondary
terminal with rated voltage maintained on the
other side
Single phase short circuit at secondary
terminal with rated voltage maintained on
other side
Overload Capability
28.0
Noise Level
29.0
Radio Influence Voltage
30.0
Harmonic suppression
31.0
Partial Discharge
32.0
32.1
Tappings to be provided on HV winding for
OLTC
Rotary Tap switch operating voltage
Transformer to be designed for suppression of 3rd,
5th, 7th harmonic voltages and high frequency
disturbances.
Transformer to be free from partial discharge upto
120 % of rated voltage as the voltage is reduced
from 150 % of rated voltage i.e. there shall be no
significant rise above background level
Off circuit taps on HV winding +/- 5%in steps of 2.5
% ,change of taps by eternally operated switch.
11kV
32.2
Rotary Tap switch current rating, Amps
60 Amps
33.0
Loss capitalization formulae
As per CBIP manual (see note 1)
26.0
26.1
26.2
For 3 secs.
As per IS 6600
Shall not exceed limits as per NEMA TR-1 with all
accessories running measured as per IEC 551 /
NEMA standard
Maximum 250 microvolt
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Volume – I Technical Specification For Station Transformer
33.1
No load Loss capitalization figure
Rs. 4, 09,979 per KW
33.2
Load loss capitalization figure
Rs. 2, 26,718 per KW
Note:
The transformers will be evaluated against no load and load losses guaranteed by the bidders with
capitalization of losses as per CBIP guidelines for loss capitalization. The corresponding
capitalization figures for no load and load losses shall be as per Cl. 33.1 & 33.2 above. In the event
of measured loss figures during testing exceeding the guaranteed loss figures of the successful
bidder penalty shall be levied at a rate of 1.25 times the figures mentioned above for both no load
and load losses.
TECHNICAL SPECIFICATION FOR OIL
ANNEXURE B
Transformer oil shall be new and confirm to the following requirements:
1. CODES & STANDARDS
Latest revision of following codes & standards with all amendments –
1.1
1.2
Standard No
IS 335
IS 1783
Title
New Insulating Oil
Drums for Oils
2. PROPERTIES
The insulating oil shall have following features:
2.1
Appearance
2.2
2.3
Density at 29.5 deg C Max
Kinematics viscosity Max
2.4
2.5
2.6
2.7
Interfacial tension at 27 deg C
Flash point pensky- marten (closed)
Pour Point, Max
Neutralization value
i) Total acidity, Max
ii) Inorganic acidity / Alkalinity
Corrosive Sulfur
Electric strength breakdown voltage
i) New unfiltered oil. Min
2.8
2.9
Clear, transparent and free from suspended
matter or sediments
0.89 g/cm3
16 cSt at 27 deg C
11 cSt at 40 deg C
0.04 N/m
140 deg C
- 15 deg C
0.03 mg KOH/g
Nil
Non-corrosive
Average value of six samples
30 kV (rms) min
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Volume – I Technical Specification For Station Transformer
2.10
2.11
2.12
2.12
2.13
2.14
2.15
2.16
2.17
ii) After filtration Min
Dielectric dissipation factor (tan δ)
Oxidization Stability
i) Neutralization value after
oxidation, Max
ii) Total sludge, after oxidation,
Max
iii) Max Tan delta at 70 deg C
Specific resistance (resistivity)
a. 27 deg C
b. 90 deg C
Ageing
characteristics
after
accelerated ageing
i) Specific
resistance
(resistivity)
a. 27 deg C
b. 90 deg C
ii) Dielectric dissipation factor
(tan δ) at 90 deg C Max
iii) Total acidity, Max
iv) Total sludge, Max
Presence of oxidation inhibitor
Water content, Max
Max PCA ( Poly cyclic aromatics)
content
PCB (Poly chlorinated biphenyl)
content
Tests
60 kV (rms)
0.002 at 90 deg C, Max
0.0005 at 27 deg C, Max
0.15 mg KOH/g
0.03 % by weight
0.1
3000 X 10 ^12 ohm-cm
150 X 10^12 ohm-cm
(open breaker method with copper catalyst)
27 X 10^12 ohm-cm
2 X 10 ^12 ohm-cm
0.1
0.05 mg KOH/g
0.05 % by weight
no antioxidant additives
40 ppm
3%
Not detectable
As per IS 335
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BSES Bhawan, Nehru Place, New Delhi- 19
TECHNICAL SPECIFICATION
FOR
66KV OUTDOOR CIRCUIT BREAKER
Prepared by
Meenakshi
Rev: 0
Reviewed by
Kiran Alla
Date:
Approved by
Kiran Alla
66
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Volume – I Technical Specification for 66KV Outdoor Circuit Breaker
1.0
CODES & STANDARDS:
The circuit breakers shall be designed, manufactured and tested in accordance with the latest
applicable Indian Standard, IEC standard and CBIP manuals as listed below –
National Standard
Standard Code
Indian electricity act
CBIP manual
Standard Description
Revised edition
IS-2516
IS-13118-1991
Specification for circuit. Breaker.
Specification for high voltage altering current circuit
breaker
Insulating oil for Transformer & Switchgear.
Bushing for alternating voltage above 1000 volts.
Insulator for Overhead lines.
Single phase small AC and Universal Electric Motors.
Guide for testing single phase AC and Universal motors.
General Requirement for switchgear for voltage not
exceeding 1Kv.
Degree of protection provided by enclosure for low-voltage
switchgear control gear.
PVC insulated cables up to & including 1100 volts.
HRC Cartridge fuses links up to 650 volts.
Outdoor switchgear & control gear matching with latest
IS/IEC requirement
Porcelain Post Insulator
Hollow insulators for use in electrical equipment
Specification for high voltage alternating current circuit
breaker
High Voltage alternating Current Circuit Breaker
Common specification for high voltage switchgear and
control gear standards
SF6 Gas
IS-335-1995
IS-2090-1973
IS-731-1971
IS -996-1979
IS-7572-1974
IS 4237-1967
IS-2147-1962
IS-1554 Part-I 1988
IS-2208
IS-375
IS-2544
IS-5621
IEC-56
IEC-62271 - 100
IEC-60694
IEC-376
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Volume – I Technical Specification for 66KV Outdoor Circuit Breaker
2.0
CIRCUIT BREAKER DESIGN FEATURES
Description
2.1.0
Contacts
2.1.1
Making & Breaking
Contacts
2.1.2
2.1.3
2.1.4
2.2.0
2.3.0
Arcing Contacts
Main Contacts
Material of tips of
contact
Sulphur Hexa
Fluoride Gas (SF6
Gas)
Operating
Mechanism
2.4.0
Indicators
2.5.0
Closing Coil
2.6.0
Tripping Coil
2.7.0
Remote / Local
closing & Tripping
2.8.0
Manual spring
charging
2.9.0
Spring Operated
Requirement / Rating
Hermetically sealed, free from atmospheric effects, adjustable to
allow for wear, easily replaceable and shall have a minimum
number of moveable parts and adjustments to accomplish these
results
First to close and last to open
First to open and last to close.
Silver-plated and have tungsten alloy tipping.
SF6 gas shall comply with IEC 376, suitable in all respect for use in
the switchgear under all the operating conditions.
a)Suitable for high speed re-closing, anti-pumping and trip free (as
per IEC definition) electrically or mechanically under every method
of closing (except during closing for maintenance).
b)The operating mechanism shall be such that the failure of any
auxiliary spring will not prevent tripping
Electrical indicators as well as a mechanical indicator shall be
provided for
a) Open and close position indication of breaker
b) Spring charged indication
c) Local / Remote indication
These indications shall be located in a position where it will be
visible to a man standing on the ground with the mechanism
housing closed. An operation counter shall also be provided with
each breaker.
SF6 gas density monitor shall be provided at 1.5 metre from ground
level, tubing between gauge & breaker shall be stainless steel.
Closing coil shall operate correctly at all values of voltage between
85% and 110% of the rated voltage.
a) Shunt trip shall operate correctly at all values of supply voltage
between 70% and 110% of rated voltage.
b) Trip coil shall be suitable for trip circuit supervision, the relay for
monitoring which will be provided by the Owner and mounted on
control panel.
c) Two no’s tripping coil shall be provided.
a) Operating mechanism shall normally be operated by remote
electrical control. Electrical tripping shall be performed by shunt trip
coils.
b) A conveniently located manual tripping lever or button shall also
be provided for local tripping of the breaker and simultaneously
opening the re-closing circuit. It shall be possible to trip the
breaker in the event of auxiliary supply failure.
For spring charged mechanism a local manual closing device which
can easily be operated by one man standing on the ground shall
also be provided for maintenance purpose and direction of motion
of handle shall be clearly marked
a) Complete with motor, opening spring and closing spring with limit
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Volume – I Technical Specification for 66KV Outdoor Circuit Breaker
Mechanism
2.10.0
Motors
2.10.1
Duty requirement
2.11.0
Supply Voltage
Variation
Frequency
variation
Combined voltage
& frequency
Interlocks
2.12.0
Control Cabinets
2.12.1
Enclosure
2.12.2
Mounting
2.12.3
Doors & Locks
2.12.4
Control cables
2.12.5
Heaters
2.12.6
Terminals
2.12.7
Illumination
2.10.2
2.10.3
2.10.4
switch for automatic charging and all other necessary accessories
to make the mechanism a complete operating unit
b) One close-open operation shall be possible after failure of
power supply to motor
c) Closing action of the circuit breaker shall compress the opening
spring ready for tripping
Motors shall be’ Universal type’ capable of satisfactory operation for
the application and duty as required by the driven equipment. Motor
shall be rated for 240 Volts AC.
Motors shall be capable of giving rated output without reduction in
the expected life span when operated continuously in the system.
± 15%
± 5%
± 15%
Necessary interlocks to prevent the closing or opening of the
breaker under low SF6 pressure & devices for initiating alarm shall
be provided. Also castle key and electrical interlock shall be
provided with isolators.
Operating mechanism and all accessories shall be enclosed in a
control cabinet. A common marshalling box for the three poles of
the breaker shall be provided, which shall be IP 55.
Control cabinet enclosure shall be sheet steel enclosed, dust,
weather and vermin proof with a degree of protection as mentioned
in Annexure-B of GTP.
Control cabinets shall be suitable for mounting on the breaker
structure at sufficient height for easy operation
Control cabinets shall be provided with double hinged doors with
padlocking arrangement. All doors, removable covers and plates
shall be gasketed all around with neoprene gaskets.
Control cable entries shall be from bottom. Suitable removable,
undrilled cable gland plate shall be provided on the cabinet for this
purpose.
Suitable heaters with auto control for ON/OFF at preset temp. shall
be mounted in the cabinet to prevent condensation. ON/OFF switch
and fuse shall also be provided. Heater shall be suitable for 240 V
AC supply voltage
a) Terminal blocks shall be 650 V grade 10 Amps rating, complete
with insulated barriers stud type terminals, washers, nuts and lock
nuts and identification strips. Separated stud shall be provided for
incoming and outgoing wires. Marking of terminal strips shall
correspond to wire number on diagrams. b) Terminal blocks shall
be fully enclosed with easily removable cover and made of NYLON
66. The terminal blocks shall have marking strips and all terminals
shall be clearly marked with identification numbers or letters to
facilitate connections to the external wiring c) 20 percent spare
terminal blocks shall be provided for Owners use in addition to
those already provided for interlocks
A suitable switch to operate on opening of the door shall be provide
to illuminate the interior of the control cabinet
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Volume – I Technical Specification for 66KV Outdoor Circuit Breaker
2.12.8
Control Cubicle
Wiring
2.12.9
Lugs
2.12.10
Sleeves
2.12.11
Push Button
2.12.12
Switches
2.12.13
MCB
2.12.14
Earthing
2.13.0
2.14.0
Caution/Danger
Plate
Safety Interlocks
2.15.0
Bushings
2.15.1
Colour & Glazing
All wiring shall be carried out with 650 Volt grade Single core
stranded, flexible copper conductor wire with PVC insulation and
shall be flame, vermin and rodent proof. The size of control wire
shall be 1.5/2.5 sqmm.
Wire terminations shall be made with solderless crimping type of
tinned copper lugs. All lugs shall be pre insulated type.
Insulated sleeves shall be provided at all the wire ends and shall fit
tightly on the wires and shall not fall off when the wire is
disconnected from terminal block. The wire numbers on the wiring
diagram shall be in accordance with IS: 375 or to the international
Standard
a) Close / trip push buttons shall be momentary contact type. The
color of the push button shall be subject to approval of the Owner.
Each push Button shall be provided with integral inscription plates
engraved with their function
b) All push buttons shall have two normally open and two normally
closed contacts. The contact shall be able to make and carry 5
Amps at 220V DC and shall be capable of breaking 1 Amp.
Inductive load
All control switches shall be of rotary switch type and toggle/piano
switches shall not be accepted. All control switches shall be rated
for 220V DC
220V/110V/50V DC, 16A DP MCB shall be used for control circuit
and 240V AC, 10A SPN MCB shall be used for motor and heater
circuit
a) All metal parts not intended for carrying current shall be made of
stainless steel and connected to duplicate earthing system and
suitable terminals shall be provided on each equipment or part of
equipment in conformity with the I.E. Rules and relevant IS.
b) The earth continuity conductor shall have sufficient crosssectional area so as to afford a low resistance path for the full fault
current corresponding to the Circuit breaker rating
c) The size of earth continuity conductor shall be as large as
possible to reduce the potential rise to minimum of the metal frame
of the circuit breaker and in no case, more than 10 V
d) The size of earth conductor shall also be adequate, so as to
restrict the temperature rise to the limit without causing any damage
to the earth connection while short circuit current flows through it for
the short time rating of the equipment
e) No riveted points in current conducting path shall be permitted.
Only bolted joints with proper size of nuts & bolts with Plain/spring
washer and also locking washer is permitted. The nuts & bolts shall
made of stainless steel only
Caution name plate shall be provided at all points where terminals
are likely to remain live and isolation is possibly only at remote end
Suitable provision for safety electrical interlocks shall be made as
per advise of the Owner
Porcelain used in bushing manufacture shall be homogenous, free
from laminations, cavities and other flaws or imperfections that
might affect the mechanical or di-electric quality and shall be
thoroughly vitrified tough and impervious to moisture
Glazing of the porcelain shall be of uniform brown colour free from
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Volume – I Technical Specification for 66KV Outdoor Circuit Breaker
2.16.0
2.17.0
of Bushing
Galvanization
Nuts & Bolts
2.18.0
Joints
2.19.0
Creepage distance
2.20.0
Duty Requirement
of Circuit Breaker
2.21.0
2.22.0
Transient recovery
voltage
Temperature rise
2.23.0
Painting
2.24.0
Line side terminal
connector
blisters, burns and similar other defects.
All iron parts shall be hot-dip galvanized
Nuts & Bolts shall be stainless steel only
All joints shall be airtight. Surfaces of joints shall be tarred up,
porcelain parts by grinding and metal part of machining.
The Creepage distance of the bushing shall in no case be less than
31 mm/KV. Suitable for heavily polluted atmosphere
a) The circuit breakers shall be totally re strike fee under all duty
conditions as per Service condition.
b) The circuit breakers shall meet the above duty requirements in
case of application on U/G cable circuits as also on power
transformer
c) The circuit breaker shall be capable of Breaking the steady and
transient magnetizing current corresponding to transformers
Breaking line charging currents as per IS 2165 (Part-II sec.2) with a
temporary over voltage of 3.5 PU without the use of opening
resistors
d) Breaking 25% of the rated fault current at twice rated voltage
under phase oppositions conditions as per IS: 9135-1979
The rated transient recovery voltage for terminal fault and short line
faults shall be as per IS: 2165.
The temperature rise and the maximum temperature on any part of
the equipment when in service at site under continuous full load
condition and exposed continuously in the direct rays of the sun
shall not exceed the permissible limits as per table-4 of IEC
publication No. 56-2 and IS: 2516 when the standard specifies the
limit of temperature rise. This shall not be exceeded when corrected
for the difference between the ambient temperature at site and the
ambient temperature specified in the relevant specification. The
correction proposed shall be stated in the tender and shall be
subjected to the approval from Owner
Polyurethane based paints shall be used. The color for the finishing
paint shall be light grey as per shade No. 692 of IS-5.
Al-alloy A6 grade terminal connector shall suitable for single/twin
ACSR conductor as per GTP in schedule C-17
3.0
TESTING & INSPECTION
Test shall be carried out in accordance with IS 13118 / IEC-56 / IEC3.1.0
Tests
3.1.1
Type Tests
3.1.2
Routine test
3.1.3
Acceptance
Test
3.2.0
Tests on fitting
and accessories
60694 / IEC-62271-100
a) Circuit breakers must be of type tested quality
b) Incase, the product is never type tested earlier, seller has to conduct
the type tests from Govt. recognized / Internationally accredited test
labs at their own cost, before commencement of supply
c) If the manufacturer’s lab is accredited by Govt. / authorized body
then it shall be acceptable for type testing.
Test shall be carried out in accordance with IS13118 / IEC-56 / IEC60694 / IEC-62271-100
Test shall be carried out in accordance with IS13118 / IEC-56 / IEC60694 / IEC-62271-100
As per Manufacturer’s Standards
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Volume – I Technical Specification for 66KV Outdoor Circuit Breaker
3.3.0
4.0
Inspection &
Testing
a) The buyer reserves the right to witness all tests specified on
completed product
b) The buyer reserve the right to inspect the product at the Sellers
works at any time prior to dispatch, to verify compliance with the
specifications.
c) In-process and final inspection call intimation shall be given in
advance to Owner.
c) If the manufacturer’s lab is accredited by govt. / authorized body
then it shall be acceptable for type testing.
DEVIATIONS
Deviation from this specification, if any, shall be clearly brought out in the offer. Unless owner
explicitly accepts such deviations, it shall be considered that the offer fully complies with the
specification.
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BSES Bhawan, Nehru Place, New Delhi- 19
TECHNICAL SPECIFICATION
FOR
11KV INDOOR SWITCHGEAR
NEW GRIDS
Specification no – SP-HTSWG-01-R1
Prepared by
Alok / Hemanshi
Rev: 1
Approved by
Kiran Kumar Alla
Date: 31st July 2014
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Volume – I Technical Specification for 11KV Indoor Switchgear
1.0 CODES & STANDARDS:
Material, equipment and methods used in the manufacture of switchboard shall confirm to the latest
edition of following standards: Standard Name / No
Standard’s Description
Indian Electricity Rules 1956
Relevant safety regulation of CEA
Indian electricity act 1910
Latest edition
Switchgear and control gear
IEC: 60694, IEC: 60298, IEC: 62271-200, IEC: 60529.
IS: 3427, IS 12729, IS 12063, IS:13947, IS: 9046
Circuit Breaker
IEC 62271-100, IS 13118, IS 2516
Isolators and earthing
switches
IEC 62271-102
Current Transformers
IS:2705, IEC:60185
Voltage Transformer
IS:3156, IEC:60186
Indicating Instruments
IS:1248
Energy Meters
IS: 13010
Relays
IS 8686, IS 3231, IS 3842
Control switches and push
buttons
IS 6875
HV Fuses
IS 9385
Arrangement of switchgear
bus bars, main connections
and auxiliary wiring
Code of practice for
phosphating iron & steel
Colours for ready mixed
paints
Code of practice for
installation and maintenance
of switchgear
IS 375
IS 6005
IS 5
IS 3072
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Volume – I Technical Specification for 11KV Indoor Switchgear
2.0 PANEL CONSTRUCTION
In the event of direct conflict between various order documents, the precedence of authority of
documents shall be as follows –
2.1
Enclosure Type
2.2
Enclosure degree of
protection
Enclosure Material
2.3
2.4
2.5
2.6
Load bearing members
Doors and covers
Gland Plate (detachable
type)
2.7
2.8
Height of complete Panel
Dimension of Instrument
Chamber
Extensibility
Separate compartment for
2.9
2.10
2.11
2.12
2.13
2.14
Transparent inspection
window
Bus end cable box
Breaker compartment door
2.15
2.16
Inter compartmental
connections
Breaker to bus bar
compartment
Breaker to cable
compartment
Pressure relief devices
Bus support insulator
2.17
Fixing arrangement
2.18
Required HV cable
termination height in the
cable compartment
Panel Base Frame
Handle
2.14.1
2.14.2
2.19
2.20
Free standing, indoor, Fully compartmentalized, Metal clad,
Vermin Proof
IP 4X for High Voltage compartment
IP 5X for low voltage compartment
Pre – Galvanized CRCA steel
Minimum 2.5 mm thick
Minimum 2.0 mm thick
3.0mm MS for multicore and 5.0mm Aluminum for single core
cables. All gland plates should be detachable type with
gasket
Maximum 2700mm, operating height maximum 1600mm
Depth ( 500mm) ( Minimum )
On either side
Bus bar, circuit breaker, HV incoming cable, HV outgoing
cable PT, LV instruments & relays.
For cable compartment at height of cable termination.
For direct cable feeder from bus.
Separate, with lockable handle (Design with breaker trolley
as the front cover is not acceptable). Door of one panel
should not cause hindrance for opening of adjacent panel.
Through seal off bushings
Through seal off bushings
To be provided for each HV compartment.
Non hygroscopic, track-resistant, high strength, Epoxy
insulators (calculation for validating dynamic force withstand
capability to be submitted during detailed engineering)
Doors – Concealed hinged, door greater than 500mm
shall have minimum three sets of hinges
Covers – SS bolts
Gasket - Neoprene
Gasket arrangement shall be Provided between panels.
650mm ( Minimum ) for 11KVfrom bottom of the panel
Steel base frame as per manufacturer’s standard.
Removable bolted covers with “C” type handle for cable
chamber and busbar chamber. Panel no/identification to be
provided on cable box cover also.
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Volume – I Technical Specification for 11KV Indoor Switchgear
2.21
2.22
2.23
Circuit Breaker
Type
Mounting
2.24
Switching duty
2.25
2.26
Interrupting medium
Breaker operation
Operating mechanism
2.27
2.28
2.28.1
2.28.2
2.28.3
2.28.4
2.28.5
2.29
2.30
2.31
2.32
3.0
3.1.0
3.1.1
3.1.2
3.1.3
3.1.4
3.1.5
Breaker Indications and
push buttons
ON/OFF/Emergency trip
push button
Mechanical ON-OFF
indication
Operation counter
Test-service position
indicator
Mechanism
charge/discharge indicator
Breaker positions
Inter changeability
Breaker control
Handle
Functional Requirements
Interlock and safety devices
Breaker compartment door
opening
Breaker compartment door
closing
Racking mechanism safety
interlock
Racking in or out of breaker
inhibited
Racking in the circuit
breaker inhibited
Truck type Only.
On withdrawable truck or trolley, with locking facility in
service position.
a) Transformer ( oil filled and dry type )
b) Motor (of small and large ratings – DOL starting with
starting current 6 to 8 times the full load current & with a
maximum 3 starts per hour)
c) Underground cable with length up to 10km.
Vacuum
Three separate identical single pole units operated through
the common shaft.
Re-strike free, Trip free, with electrical anti-pumping feature
One O-C-O operation possible after failure of power supply to
the spring charging motor.
Motor wound, spring, charged, stored energy type with
manual charging facility
a) Manual / mechanical
b) Emergency Off push button will be provided with a
protective flap.
c) Mechanical ON shall have padlocking facility.
On breaker trolley front
On breaker trolley front
On breaker trolley front
On breaker trolley front
Service, test and isolated
Possible, only with breaker of same rating
On panel front only
Breaker shall be provided with handles for easy handling,
rack in-out operation and manual spring charging as
applicable.
Opening of door and rack out to test / isolated position should
be possible with breaker in OFF position only.
Should be possible even when breaker is in isolated position
Mechanical type
When the breaker is closed
Unless the control plug is fully engaged
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Volume – I Technical Specification for 11KV Indoor Switchgear
3.1.6
3.2.0
3.2.1
Disconnection of control
plug inhibited
Additional Requirement
Exposure to live parts
As long as the breaker is in service position
In case the breaker panel door is required to be opened
during a contingency, the personnel should not be exposed
to any live parts. Suitable shrouds / barriers / insulating
sleeves should be provided.
In either service or test position
Only when local/remote selector switch is in local position
Only when local/remote selector switch is in remote position
Irrespective of selector switch
Irrespective of selector switch
In test or isolated position keeping control plug connected
3.2.3
3.2.4
3.2.5
3.2.6
3.2.7
3.2.8
3.3.0
3.3.1
Operation of breaker
Closing from local
Closing from remote
Tripping from local
Tripping from remote
Testing of breaker
Safety shutters
Automatic safety shutter for
female primary disconnects
3.3.2
3.3.3
Label for identification
Warning label on shutters of
incoming and other
connections
Breaker electrical operation features
No. of Trip coil
2 Nos for each breaker.
3.4.0
3.4.1
To fully cover contacts when breaker is withdrawn to test.
Independent operating mechanism for bus bar & cable side
shutters, separately pad lockable in closed position.
For bus side and cable side shutters
Clearly visible label “isolate elsewhere before earthing” be
provided
Shunt Trip coil shall operate correctly for all value of
voltages between 70% & 110% of rated voltage.
3.4.2
3.4.3
3.4.4
3.4.5
3.4.6
3.4.7
3.4.8
3.4.9
4.0.0
4.1.0
5.0.0
Closing Coil
Trip circuit supervision
Trip circuit supervision relay
contact
Emergency Trip Push button
contact
Master trip relay contact
DC Control supply bus in all
panels
PT supply bus in all panels
Surge suppressors
Provision
Type
Current Transformers
Trip coil shall be suitable for Trip circuit supervision relay
for monitoring.
One no. for each Breaker
Closing coil shall operate correctly for all value of voltages
between 85% & 110% of rated voltage.
To be given for breaker close and open condition
For indication, alarm & to inhibit closing of breaker
Wired directly to trip coil ( wired to Master trip relay if
second trip coil provided)
Wired to inhibit closing of breaker
Wired to inhibit closing of breaker
Fed by two DC Incoming source in bus coupler panel with
auto changeover facility
Fed normally by Bus PT with automatic changeover facility
to incomer line PT
To be provided in all panels except bus coupler and BPT
Gapless, metal oxide type
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Volume – I Technical Specification for 11KV Indoor Switchgear
5.1.0
Type
Rating and technical
particulars
CBCT
6.0.0
6.1.0
6.1.1
Potential Transformer
Type
Mounting
6.1.2
Neutral
7.0.0
7.1.0
7.1.1
7.1.2
7.1.3
Feeder and Bus Earthing
Earthing arrangement
Short time withstand
capacity of earthing truck
Operation from front
Interlocks
8.0.0
8.1.0
8.2.0
Equipment Earthing
Material of earthing bus
Earth bus joints
8.3.0
8.4.0
Rating
Enclosure and non-current
carrying part of the
switchboard/components
Hinged doors
Circuit breaker frame /
carriage
8.5.0
8.6.0
Shall be cast resin type with insulation class of E or better.
For all other feature refer technical particulars.
If specified, bidder shall clearly mention his proposal for
mounting the same.
Shall be cast resin type with insulation class of E or better.
It shall be mounted on a withdrawable carriage. Mounting of
PT on the breaker truck is not acceptable. In case it is
mounted on the panel rear top, access to the PT and the
reinforcement in the panel for allowing a person to stand
should be provided.
The HV neutral connection to earth shall be easily
accessible for disconnection during HV test.
Through separate earthing truck for bus and feeder.
Equal to rating of breaker. Refer technical parameters.
Mechanically operated by separate switch.
To prevent inadvertent closing on the live circuit, with
padlocking arrangement to lock truck in close or open
position.
Copper
All bolted joints in the bus will be made by connection of two
bolts.
Sized for rated short circuit current for 3 seconds.
Effectively bonded to the earth bus
8.7.0
Metallic cases of relays,
instruments and other LT
panel mounted equipment
8.8.0
CT & PT neutral
Earthed through flexible copper braid
Earthed before the main circuit breaker contacts/control
circuit contacts are plugged in the associated stationary
contacts.
Connected to the earth bus by independent copper wires of
size not less than 2.5 sq mm with green color insulation. For
this purpose LT compartment should have a clear
designated earth bus to which earth connections from all
components are to be connected.
Earthed at one place at the terminal blocks through links.
9.0.0
9.1.0
9.2.0
9.2.1
9.2.2
9.2.3
Meters
Meters
Ammeter
Size
Panels where to be provided
Ammeter selector switch
Flush Mounted
Taut band, moving iron type
96 X 96 mm
All panels except Bus PT
To be provided
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Volume – I Technical Specification for 11KV Indoor Switchgear
9.2.4
9.3.0
9.3.1
9.3.2
9.3.3
9.3.4
9.4.0
Accuracy class
Voltmeter
Size
Panels where to be provided
Voltmeter switch
Accuracy class
Energy meter
9.4.1
9.4.2
9.5.0
Panels where to be provided
Accuracy Class
Multi functional meter –
3Phase 4 wire Connection
Indication
Indication
Flush mounted
Lamps
High intensity, clustered LED type
Breaker ON
Red
Breaker Off
Green
Spring Charged
Blue
DC Control supply fail
Amber
AC Control supply fail
Amber
Auto trip
Amber
Service position
White
Test position
White
Heater circuit healthy
Yellow ( Indication with integrated push button for checking )
Trip circuit healthy
White
PT supply as applicable
R, Y, B
Hooter with isolation switch
Hooter for AC and Alarm for DC supply failure
Selector switches and push buttons
Selector switch
Flush mounted on LV compartment door, with shrouded
terminals
TNC Switch with pistol grip
Lockable spring return to normal position
Local / SCADA selector
As Per BSES Requirement
switch
Selector switch for ammeter
6 way 7 position
Selector switch for voltmeter 6way 7 position
Rotary ON/Off switches
For heater / illumination circuit
Rating
16 A
Push button
Flush mounted on LV compartment door, with shrouded
terminals
Emergency trip push button
Red color with stay put
Accept push buttons
Black color – Trip alarm / DC fail alarm
Reset push buttons
Yellow color – Trip alarm / DC fail alarm
Test push buttons
Blue color – for heater circuit healthy
10.0.0
10.1.0
10.2.0
10.2.1
10.2.2
10.2.3
10.2.4
10.2.5
10.2.6
10.2.7
10.2.8
10.2.9
10.3.0
11.0.0
11.1.0
11.2.0
11.3.0
11.5.0
11.6.0
11.7.0
11.7.1
11.8.0
11.8.1
11.8.2
11.8.3
11.8.4
1.0
Taut Band, moving iron type
96 X 96 mm
Incomer and bus PT panel
To be provided
1.0
Space and Provision for wiring shall be provided. Energy
meter is not in supplier’s scope.
All panels except bus coupler and bus PT
As per BSES Requirement
Scrolling facility with LCD display for parameters like power
factor, KW, KVA ampere etc. accuracy 0.5 with RS 485 port.
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Volume – I Technical Specification for 11KV Indoor Switchgear
11.8.5
12.0.0
12.1.0
Rating
Internal Wiring
Internal wiring
12.2.0
Size
12.3.0
12.3.1
Colour code
PT
12.3.2
12.3.3
12.4.0
12.4.1
CT
Others
Ferrules
Ferrule type
12.5.0
Lugs
12.6.0
12.7.0
Spare contacts of relays,
timers etc
Wiring enclosure
12.7.1
Inter panel wiring
13.0.0
13.1.0
Terminal Blocks (TB)
Rating and Type
13.2.0
Marking and covers
13.3.0
13.4.0
13.5.0
13.5.1
13.5.2
13.5.3
13.6.0
14.0.0
14.1.0
Disconnecting Facility
Shorting and Earthing
Facility
Spare terminals
TB shrouds & separators
Clearance
Clearance between 2 sets of
TB
Clearance with cable gland
plate
Clearance between AC / DC
set of TB
Test Terminal blocks
Relays and protection
Technology and
Functionality
10 A
1100V grade PVC insulated (FRLS) stranded flexible copper
wire.
2.5 sq. mm for CT circuit, 1.5 sq mm for PT and 1.5 sq. mm
for control circuit
R ph – Red
Y Ph – Yellow
B Ph – Blue
Neutral – Black
R ph – Red Y Ph – Yellow B Ph – Blue Neutral - Black
DC – grey, AC-black, Earth – green
At both ends of wire
Interlocked type (one additional red color ferrule for all wires
in trip circuit)
Tinned copper, pre-insulated, ring type,fork type and pin
type as applicable. CT circuits should use ring type lugs
only.
Wired up to the terminal blocks
Plastic channels, inter panel wiring through PVC sleeves or
suitable grommets.
Wiring with ferrule to be terminated in the adjacent shipping
section will be supplied with one end terminated and the
other end bunched and coiled.
1100V grade, moulded piece, stud type screw driver
operated terminals complete with insulated barriers,
washers, nuts and lock nuts.
White fiber markings strip and clear plastic, slip-on/clip-on
terminal covers to be provided.
To be provided in CT and PT terminals.
To be provided in CT Terminals
20% in each type of TB row
Moulded non-inflammable plastic material
100 mm min.
250 mm min
100 mm min
Screw driver operated stud type for metering circuit
Numerical, microprocessor based with provision for
multifunction protection, control, metering and monitoring.
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Volume – I Technical Specification for 11KV Indoor Switchgear
14.1.1
14.1.2
Mounting
Architecture
Flush Mounting, IP 5X
Hardware and software architecture shall be modular and
disconnect able to adapt the protection and control unit to
the required level of complexity as per the application.
Relay shall utilize a user friendly setting and operating multilingual software in windows environment with menus and
icons for fast access to the data required. Programming
software and communication cord for offered relays should
be included in scope of supply.
RS 485 rear port for interfacing with SCADA on IEC 61850
protocol. If relays have any other rear port,
hardware/software required to achieve the above said
protocol for compatibility will be in supplier’s scope.(IF any
required converter needs to be consider by vendor).
Front port (preferably serial)
for configuration/data
download using PC. Cost of licensed software and
communication cord, required for programming of offered
protection relays shall be included in the cost of switchgear.
An alphanumeric key pad and graphical LCD display with
backlight indicating measurement values and operating
messages. It should be possible to access and change all
settings and parameters without the use of PC.
Relay shall integrate all necessary protections for different
applications in accordance with IS and IEC. Relay shall
provide wide setting ranges and choice of all IEC, IEEE and
other tripping curves through a minimum of two setting
groups.
Relay shall have the facility of recording of various
parameters during event/fault with option to set the duration
of record through settable pre fault and post fault time.
Relay shall store records for last 10 events and 10 faults
(minimum). It should be possible to download records locally
to PC or to remote SCADA.
Measurement of Event Recording , Disturbance Recording,
Harmonic Distortion , RMS Current values & Frequency,
Peak and rolling Current Values, Max. and Average current
Values, Phase and or Neutral Angles , Max. and average
voltage, Power and Energy, Apparent Power and Apparent
Power and Apparent Energy with Time Synchronization.
Relay shall be able to detect internal failures. A watchdog
relay with changeover contact shall provide information
about the failure.
All relays shall be capable of being synchronized with the
system clock using SCAD interface and PC.
14.1.3
Programming and
configuration
14.1.4
SCADA Interface port
14.1.5
PC Interface port
14.1.6
User Interface
14.1.7
Relay characteristics
14.1.8
Event and Fault records
14.1.9
General Features of
Numerical Relays
14.1.10
Self diagnosis
14.1.11
Time synchronization
14.1.12
Digital Input and Digital
Output of numerical relays
No. of Digital input / Digital output of any type of relay which shall be used in control and relay panel shall be as per BSES requirement and signal list only. Refer the attached tentative signal list of all feeders (Incomer , Out going, Capacitor Bank , Buscoupler, Station Transformer & Bus PT).
14.1.12
Operation Indicators
LEDs with push button for resetting.
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BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for 11KV Indoor Switchgear
14.1.13
15.1.0
Test Facility
Inbuilt with necessary test plugs for Relays and Meters.
Protection Relays for 11Kv Incomer panel
Relay 1
15.1.1
3 phase over current and Earth fault protection with IDMT.
Definite time and instantaneous characteristics.
Under voltage and overvoltage protection
PT supervision ( fuse failure monitoring)
Relay 2
High Impedance Restricted Earth fault protection.
Note
Combining functions of Relay -1 and Relay-2 in single relay
is not acceptable.
Protection Relays for 11Kv Bus section panel
Relay 1
15.1.2
3 phase over current and Earthfault protection with IDMT,
Definite time and instantaneous characteristics.
Protection Relays for 11Kv Outgoing panel
Relay 1
15.1.3
3 phase over current and Earth fault protection with IDMT,
Definite time and instantaneous characteristics.
Protection Relays for 11Kv Station Transformer panel
Relay 1
15.1.4
3 phase over current and Earth fault protection with IDMT,
Definite time and instantaneous characteristics.
Protection Relays for Capacitor panel
Relay 1
Relay 2
3 phase over current and Earth fault protection with IDMT,
Definite time and instantaneous characteristics.
Earth fault protection
Under voltage and overvoltage protection
PT supervision ( fuse failure monitoring )
Neutral unbalance relay ( current based )
Timer for on time delay ( minimum 300seconds )
Note
16.1.0
16.1.1
Combining of functions of Relay -1 and Relay -2 in single
relay is not acceptable.
Auxiliary Relay – General Features
16.1.4
Auxiliary Relay use for
Circuit supervision, trip and
timer relays
Reset mechanism for
auxiliary relays
Reset mechanism for
lockout relays
Operation Indicators
17.1.0
Auxiliary relays – Requirement
17.1.1
For each breaker
16.1.2
16.1.3
Static or electromechanical type
Self reset contacts except for lock out relays.
Electrical reset type for 11Kv outgoing panels only.
Hand reset type for all other panels.
With hand-reset operation indicators (flags) or LEDs with
pushbuttons for resetting.
Anti pumping (94), lockout(86) and trip circuit supervision
(74) relays
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Volume – I Technical Specification for 11KV Indoor Switchgear
17.1.2
PT selection relays
17.1.3
Switchgear with two
incomers and bus coupler
17.1.4
17.1.6
Auxiliary relays, coupling
relays, transducers etc.
General Requirements for
all relays/contactors
Auxiliary Supply
18.1.0
18.1.1
18.1.2
Space Heaters
Space heaters
Space heater location
19.1.0
19.1.1
19.1.2
Switch and sockets
Lamp with switch
Universal type (5/15A)
socket with switch
Name Plates and Marking
Nameplates
Equipment Nameplates
17.1.5
20.1.0
Feeder Nameplates
Rating Plate
Material
Fixing
Markings
To be provided for selection between Bus PT and Line PT of
respective sections.
Lockout (86) contact of each incoming breakers to be wired
in series in closing circuit of other incoming breakers and
bus coupler.
To effect interlocks and to exchange signals of status &
control from remote.
220VDC. All relays / contactors shall be suitable for
continuous operation at 15% overvoltage.
Thermostat controlled with switch for isolation
Breaker & HV cable compartment to be mounted on a
insulator. Heater position in cable compartment should be
easily accessible after cable termination. Heater position in
breaker chamber shall be accessible with breaker racked-in.
For LV & cable chamber
In LV chamber
To be provided as per the following description
a. All equipment mounted on front side as well as
equipment mounted inside the panels shall be
provided with individual name plates with equipment
designation engraved.
b. All front mounted equipment shall be also provided
at the rear with individual name plate engraved with
tag numbers corresponding to the one shown in the
panel internal wiring to facilitate easy tracing of the
wiring.
a. Large and bold name plate carrying the feeder
identification/numbers shall be provided on the top
of each panel on front as well as rear side. On rear
side, nameplate should be provided on frame.
b. Rear bottom of each panel shall have a nameplate
clearly indicating the following: Customer Name –
Project details; PO No and date; Drawing Reference
No.etc.
Following details are to be provided on Panel and CB rating
plate;
a. Customer Name – BSES Delhi
b. P.O.No. and Date – As per respective PO.
Non – rusting metal or 3 ply lamicoid. Nameplates shall be
black with white engraving lettering. Stickers are not
allowed.
All nameplates / rating plates shall be riveted to the panels
at all four corners. Bolting / screw2ing is not acceptable.
Each switch shall bear clear description identifying its
function. Similar inscription shall also be provided on each
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Volume – I Technical Specification for 11KV Indoor Switchgear
device whose function is not other wise identified. If any
switch or device does not bear this inscription separate
nameplate giving its function shall be provided for it. Switch
shall also have clear inscription for each position indicating
e.g. Trip – Neutral close, ON-OFF etc.
21.1.0
21.1.1
21.1.2
21.1.3
21.1.4
Surface treatment & painting
Surface treatment
Sand blasting or by seven tank process
Paint type
Powder coated. Pure polyster base grade A structure finish
Paint shade
RAL 7032 for external & internal surface
Paint thickness
Minimum 50 microns
22.1.0
22.1.1
Inspection and testing
Type Tests
22.1.2
23.1.0
Type test report validity
period
Stage and Final Inspection
23.1.1
Acceptance & routine test
23.1.2
Notice to Owner for
conducting type tests.
Test reports of acceptance
and routine tests before
dispatch for approval
Submission Of QAP
23.1.3
23.1.4
24.1.0
25.1.0
26.1.0
26.1.1
26.1.2
26.1.3
26.1.4
26.1.5
26.1.6
26.1.7
26.1.8
The product must be of type tested quality as per all tests in
Indian standards
Last five years from date of bid submission
All the Qty. of Panels will be inspected by BSES as per
approved QAP.
As per the specification and relevant standards. Charges for
these tests shall be deemed to be included in the equipment
price.
The Owner/owner reserves the right to witness all the tests.
At least three weeks in advance.
To submit six copies
QAP will be submitted by suppliers with submission of
Schematic Drawings.
Deliverable
1.As Built Drawing of panel 6 Sets
2. Maintenance Manuals – 2CD / DVD Soft Copy , 6 Set of
Hard Copy
3. Relay and equipments Catalogues & Manuals
4. Relay Settings & Maintenance Manuals
5. Relays software and connection/ communication cables
Training
Training on relays and equipment operations shall be
provided to the officials of BRPL will be in the Scope of
Suppliers.
Approved Make of components for 11KV Switchgear Panel
Numerical Relays
ABB / SIEMENS Numerical relays used in complete
switchboard should be of same make.
Auxiliary Electromechanical ABB / Areva / Schneider
Relays
Contactor / Auxiliary Relays
Schneider Electric / Siemens / ABB
Analog Ammeter / Voltmeter AE / Rishabh
Indication LEd , Lamp
Teknic/ Siemens
Push Button
Teknic
Field Terminal Block
Phoneix / Elemex / Connect well
MCB
Schneider / Siemens / ABB
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Volume – I Technical Specification for 11KV Indoor Switchgear
26.1.9
26.1.10
26.1.11
26.1.12
26.1.13
26.1.14
26.1.15
26.1.16
26.1.17
Hooter
Panel Light
Power Socket
Multifunction Meter
Wires for wiring
Test Terminal Block
Control Switch
Instrument Transformers
Surge Arrestor
Alan
Philips / Bajaj / Surya
Anchor / Reputed make
Rishab / Socomec
KEI / Finolex / Polycab
Areva / IMP / Nelster
Areva / Switron
ECS / Pragati / Kappa / Narayan power tech
Oblum / Lamco / Raychem
3.0 DEVIATIONS
Deviation from this specification, if any, shall be clearly brought out in the offer. Unless owner
explicitly accepts such deviations, it shall be considered that the offer fully complies with the
specification.
SCADA SIGNAL LIST: Tentative Signal list List of Abbreviations
AI - Analog Input/Analog Values
MV - Measured Value
MFM - Multi Function Meter
DCO - Double Command Output
DPI - Double Point Indication
SCO - Single Command Output
SPI - Single Point Indication
Signals - 11KV Out Going Feeders
Breaker ON/OFF
Trip Ckt Healthy
Spring Charge
Breaker in service/Test
Auto Trip(86) Operated
Panel DC Fail
L/R Switch in Local/Remote
Relay Int Fault.
Over Current Operated
Signal
Type
DPI
SPI
SPI
DPI
SPI
SPI
DPI
SPI
SPI
85
Signals - 11KV Bus Coupler
Breaker ON/OFF
Trip Ckt Healthy
Spring Charge
Breaker in service/Test
Auto Trip(86) Operated
Panel DC Fail
L/R Switch in Local/Remote
Relay Int Fault.
PT MCB – Met &protection operated
Signal
Type
DPI
SPI
SPI
DPI
SPI
SPI
DPI
SPI
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for 11KV Indoor Switchgear
Earth Fault Operated
BKR CLS/OPN COMMAND
AutoTrip(86) relay reset from Remote
3Phase R,Y,B - Current & Voltage,Active
Power,Reactive Power,Power
Factor,Max.Demand,Neu.Current
Fault Current Levels/Disturbance Record/
If Any Fault Graphs for Remote diagnosis
purpose.
MFM - Signals
Data Type
R-Phase Current
Y-Phase Current
B-Phase Current
Neutral Current
R-Y Phase Voltage
Y-B Phase Voltage
B-R Phase Voltage
Active Power
Reactive Power
Power Factor
Maximum Demand
THD
MV/MFI
MV/MFI
MV/MFI
MV/MFI
MV/MFI
MV/MFI
MV/MFI
MV/MFI
MV/MFI
MV/MFI
MV/MFI
MV/MFI
Signals - 11KV Incomers
Breaker ON/OFF
Trip Ckt Healthy
Spring Charge
Breaker in service/Test
Auto Trip(86) Operated
VT fuse Blown - Metering.
VT fuse Blown - Protection
Panel DC Fail
L/R Switch in Local/Remote
Relay Int Fault.
SPI
DCO
SCO
AI/MV
Over Current Operated
Earth Fault Operated
BKR CLS/OPN
Fault Current Levels/Disturbance
Record/
If Any Fault Graphs for Remote
diagnosis purpose.
SPI
SPI
DCO
AI
AI
Signal
Type
DPI
SPI
SPI
DPI
SPI
SPI
SPI
SPI
DPI
SPI
86
Signals - 11KV Capacitors
Breaker ON/OFF
Bank ISO ON/OFF
Trip Ckt Healthy
Spring Charge
Breaker in service/Test
Auto Trip(86) Operated
Bus PT fuse Blown - Metering.
Bus PT fuse Blown - Protection
Panel DC Fail
L/R Switch in Local/Remote
Signal
Type
DPI
DPI
SPI
SPI
DPI
SPI
SPI
SPI
SPI
DPI
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for 11KV Indoor Switchgear
Over Current Operated
Earth Fault Operated
Under Voltage Protn.Operated
Over Voltage Protn.Operated
REF Operated
BKR CLS/OPN COMMAND
AutoTrip(86) relay reset from Remote
3Phase R,Y,B - Current & Voltage,Active
Power, Reactive Power, Power Factor, Max.
Demand ,Neutral .Current
Fault Current Levels/Disturbance Record/
If Any Fault Graphs for Remote diagnosis
purpose.
SPI
SPI
SPI
SPI
SPI
DCO
SCO
Over Current Operated
Earth Fault Operated
Under Voltage Protn.Operated
Over Voltage Protn.Operated
Neg.Phase.sequence Operated
Timer Relay operated/Normal
Relay Int Fault.
SPI
SPI
SPI
SPI
SPI
DPI
SPI
BKR CLS/OPN
AI/MV
DCO
BANK ISO CLS/OPN
AI
87
A. Trip reset from remote
DCO
SCO
3Phase R,Y,B – Current & Voltage
,Reactive Power, Neutral .Current
AI/MV
Fault Current Levels/Disturbance
Record/
If Any Fault Graphs for Remote
diagnosis purpose.
AI
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for 11KV Indoor Switchgear
ANNEXURE – B
GUARANTEED TECHNICAL PARTICULARS (DATA BY OWNER)
1.0.0
Switchgear
1.1.0
Type
1.2.0
1.3.0
1.4.0
1.5.0
1.6.0
1.7.0
1.8.0
1.9.0
Service
Mounting
System voltage
Voltage variation
Frequency
Phase
Rated voltage
Rated current @ 50 DEG C ambient
Metal clad, air insulated with VCB type circuit
breaker
Indoor
Free standing, floor mounted
11KV
+ / - 10%
50HZ + / - 5%
3
12KV
As per SLD
1.10.0
Short time rating for 3 sec.
26.3KA
1.10.1
28 / 75 KV
1.11.0
Insulation level (PF rms / impulse
peak)
System ground
1.12.0
Enclosure degree of protection
1.13.0
1.14.0
1.15.0
Bus bar – Main @ 500 C ambient
Material
Bus Bar sleeve
1.16.0
1.17.0
Bus identification
Temperature rise
1.18.0
1.19.0
1.20.0
1.21.0
1.22.0
1.23.0
2.0.0
2.1.0
2.2.0
Auxiliary bus bar
Auxiliary DC Supply
Auxiliary AC supply
Hardware
Earth bus
Power and control cable entry
Circuit Breaker
Voltage class, insulation level, short
time rating
Rated current
2.3.0
2.4.0
2.5.1
2.5.2
2.6.0
2.6.1
Duty cycle
Short circuit rating
AC sym. Short circuit current
Short circuit making current
Operating time
Break time
Effectively earthed
IP – 4X for high voltage compartment and IP – 5X
for metering and protection compartment
Rating as per SLD, Short time rating as per 1.10
Silver plated/ tinned electrolytic copper
Sleeved with shrouds on joints. Tape on joints is
not acceptable.
Colour coded
40DEG C for conventional joints, 55DEG C for
silver plated joints
Electrolytic grade tinned copper
220V DC
240V AC 50HZ
Stainless steel
Aluminum
From bottom
As specified for switchgear
As per SLD. Use of two breakers in parallel to meet
the required current rating shall not be acceptable.
O – 0.3sec – CO – 3min – CO
26.3KA
62.5KA
Not more than 4 cycles
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Volume – I Technical Specification for 11KV Indoor Switchgear
2.6.1
2.7.0
2.7.1
2.7.2
2.7.3
2.8.0
Make time
Range of auxiliary voltage
Closing
Tripping
Spring charging
No. of spare aux. Contacts of
breaker, for owner’s use
No. of spare contacts of service and
test position limit switch
Current Transformers
Voltage class, insulation level, short
time rating
Not more than 5 cycles
3.2.0
3.3.0
3.4.0
3.5.0
3.6.0
3.6.1
3.6.2
3.6.3
3.6.4
3.6.5
3.6.6
Type
Class of insulation
Ratio
Number of secondary
Accuracy class
Protection core
Core balance CT
Protection Diff / REF
Metering
VA output
Excitation current of PS class CT’s
Cast resin, window / bar primary type
Class E or better
As per SLD, secondary shall be 1 A
3
3.6.7
4.0.0
4.1.0
4.2.0
4.2.1
Primary operating current sensitivity
of CBCT’s.
Voltage Transformers
Type
Rated Voltage
Primary
4.2.2
4.2.3
4.2.4
4.2.5
4.2.6
4.2.7
4.3.0
4.3.1
4.3.2
4.4.0
Secondary
No of phases
No. of secondary windings
Method of connection
Rated voltage factor
Class of insulation
Accuracy class
- Protection
- metering
Primary and secondary fuses
5.0.0
5.0.1
5.0.2
5.0.3
6.0.0
6.0.1
HV Fuses
Voltage class
Rupturing capacity
Rated current
Surge Arrestors
Rated voltage
2.8.1
3.0.0
3.1.0
85% - 110%
70% - 110%
85% - 110%
Minimum 6 NO + 6 NC
2 NO
As specified for switchgear
5P20
PS
PS
0.2s
As per calculation
30mA at Vk/2
5A
Cast resin, draw out type, single phase units
11000/√3
110/√3
3
2
Star/Star
1.2 continuous, 1.9 for 30 seconds
Class E or better
3P
0.2
HRC current limiting type, primary fuse replacement
shall be possible with VT in withdrawn position
12KV
50KA
As per application
9kV
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BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for 11KV Indoor Switchgear
6.0.2
6.0.3
6.0.4
Maximum continuous operating
voltage ( MCOV )
Discharge current
Discharge Class
7.65kV
10kA
3
90
BSES Bhawan, Nehru Place, New Delhi- 19
\
TECHNICAL SPECIFICATION OF 66KV CONTROL & RELAY PANEL FOR NEW GRIDS Specification no – SP-CRP-01-R1
1.0
Prepared by
Approved by
Alok Kumar
Rev: 1
Kiran Kumar Alla
Date: 31.07.2014
91
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for 66KV Control & Relay Panel
Revision Record S.No. Rev.No. Item/Clause No.: 1 2 3 R1 R1 R1 4 5.7 6 4 R1 8 5 R1 11.4 6 R1 11.4.3 7 R1 12.1.5 8 R1 12.1.9 9 R1 12.1.16 10 R1 12.2.1.2 11 R1 12.2 12 R1 12.4 13 R1 13.0 14 R1 20 Nature of change Approved By Width of cubicle shall be 1250mm
Spare terminal in each type of terminal. Test terminal block for numerical relays and meter. Mimic diagram alignment with discrepancy type control switch. Multifunction meter with digital output with modbus communication. Communication protocol IEC 61850 metering equipment. Communication protocol IEC 61850 in Numerical Relays. All necessary converters shall be consider for communication of numerical relays in case of optical fiber. Digital input and output of Numerical relays Line current differential with distance relays in Line control and relays panel. Optical fiber communication in line current differential relays with distance relays in Line control and relays panel. Auxiliary relays shall NO/NC contact shall be as per BSES requirement. Minimum no. of annunciation window shall be 24Nos. Tentative SCADA signal list for reference. KA
KA
KA
92
KA
KA
KA
KA
KA
KA
KA
KA
KA
KA
KA
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for 66KV Control & Relay Panel
2.0
2.1
2.2
2.3
3.0
SCOPE OF SUPPLY
This specification covers design, manufacture, testing at manufacturer’s works, packing and delivery of control and relay panel for substation equipments. The control and relay panel shall be complete with all components and accessories, which are necessary or usual for their efficient performance and trouble free operation under the various operating and atmospheric conditions as specified in the Annexure A of data sheet. Such parts which may have not been specifically included, but otherwise form part of the CRP as per standard trade and/or professional practice and/or are necessary for proper operation of control and relay panel, will be deemed to be also included in this specification. CODES & STANDARDS:
Control and Relay panel should be designed and manufactured in accordance with the following standards – National Standard
Standard Code
IS‐1248, Part 1‐ 1993 IS‐3231, Part 1‐ 1986 Part 2 &3 ‐1987 IS‐9000 Part 1 ‐1988 IS‐13703 1993 IS‐13947 Part 1 ‐ 1993 IEC‐60255 ‐ 1989 IEC 60688 1997 4.0
Standard Description
Direct acting indicating analogue electrical measuring instruments and their accessories. Electrical relays for power system protection Basic environmental testing procedures for electronics & electrical items Low voltage fuses for Voltages not exceeding 1000V AC or 1500 V DC Low voltage switchgear & control gear Specification for electrical relays Electrical measuring transducers PANEL CONSTRUCTION
Description 4.1 Panel Type 4.2 Enclosure type 4.3 Enclosure material 4.4 Doors Requirement / Rating Simplex panels of standard dimensions. Equipment shall be mounted on the front of the panel and doors for wiring access shall be at the back of panels. Completely metal enclosed and dust, moisture and vermin proof. Degree of protection not less than IP‐4X in accordance with IS 13947 Cold‐rolled sheet steel of thickness not less than 2.0 mm. Stiffeners shall be provided wherever necessary. Doors shall be at the rear. For panels having width should 93
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Volume – I Technical Specification for 66KV Control & Relay Panel
5.0
4.5 Gland Plate 4.6 Cable Entry 4.7 Gaskets 4.8 Ventilating louvers 4.9 Foundation 4. 10 Mounting 4.11 Mounting level 4.12 Appearance be more than or equal to 1250mm, double leaf doors shall be provided. Doors shall have handles with either built‐in locking facility or be provided with padlock. At least two separate gland plates of removable type shall be provided for each panel. They shall be of sheet steel of thickness not less than 3.0 mm. Shall be from the bottom All doors, removable covers and panels shall be gasketed all around with neoprene gaskets. Ventilating louvers, if provided shall have screens and filters. The screens shall be made of either brass or GI wires mesh. The panels shall be fixed on the embedded foundation channels with intervening layers anti vibration strips made of shock absorbing materials. Base frames shall be supplied along with panels. Equipment on front of panel shall be flush mounted. Cutouts if any, provided for future mounting of equipment shall be properly blanked off with blanking plate no equipment shall be mounted on the doors. The center lines of switches, push buttons and indicating lamps shall not be less than 750mm and that for relays, meters and recorders shall be not less than 450 mm from the bottom of the panel. The center lines of switches, push buttons and indicating lamps shall be matched to give a neat and uniform appearance. Like wise the top lines of all meters, relays and recorders etc, shall be matched. WIRING
5.1 Internal wiring 5.2 Size 5.3 Colour Code 5.4 Ferrules 5.5 Termination 5.6 Wiring Enclosure 1100V grade, single core, stranded copper conductor wires with PVC insulation. 4 sqmm for CT circuits, 2.5 sqmm for PT and control circuits. R ph ‐ Red, Yph ‐ Yellow, B ph ‐ Blue, Neutral ‐ Black for CT and PT circuits. DC ‐ Grey, AC ‐ Black and Earth ‐ Green Ferrules marked to correspond with panel wiring diagram shall be fitted at both ends of each wire. Ferrules shall fit tightly on the wire. Wires directly connected to trip circuit shall be distinguished by the addition of red colored unlettered ferrule. Fork type, pin type and ring type (as applicable) tinned copper lugs to be used. Insulated sleeves shall be provided at all the wire terminations. Plastic channels to be used as enclosures. PVC sleeves to be used for inter panel wiring. 94
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Volume – I Technical Specification for 66KV Control & Relay Panel
6.0
5.7 Spare Contacts 5.8 Inter panel wiring 5.9 Auxiliary supply Spare contacts of relays and contactors etc. should be wired upto the terminal block When panels are arranged adjacent to each other inter panel wiring of common bus wires between the panels shall be furnished. These adjacent inter panel wiring shall be clearly indicated in the wiring tables. Auxiliary bus wiring for AC and DC supplies, voltage transformer circuits, annunciation circuits and other common services shall be provided on the same set of terminals in all the panels with proper segregation. TERMINAL BLOCKS
1100 V grade, minimum 10 amps continuous rating, Nylon 66, molded piece, complete with insulated barriers, stud type terminals, washers, nuts and lock nuts. White fiber markings strip with clear plastic, slip‐on / clip‐on terminal covers to be provided. Terminal Blocks (TB) for current transformer and voltage transformer secondary leads shall be Stud Type provided with test links and isolating facilities. Also current transformer secondary leads shall be provided with short‐
circuiting and earthing facilities. 20% in each type of TB row 6.1 Rating and Type 6.2 CT & PT Terminals 6.3 Spare Terminals Clearance with gland Minimum 250mm plate Clearance between Minimum 150mm two TBs Screw driver operated stud type for each type of numerical Test Terminal Blocks relays and metering Unless otherwise specified, terminal blocks shall be suitable for connecting the following conductors of cable on each side: Suitability a) All circuits including current / voltage transformer circuits: 4 sq.mm copper. b) AC / DC power supply circuits: one no. of 10 mm2 Al./ 6 sq.mm Cu. Arrangement of the terminal block assemblies and the wiring channel within the enclosure shall be such that a row of terminal block runs in parallel and close proximity to Arrangement each side of the wiring duct. The side of the terminal block opposite the wiring duct shall be reserved for the external cable connection. 6.4 6.5 6.6 6.7 6.8 95
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Volume – I Technical Specification for 66KV Control & Relay Panel
7.0
PAINT
7.1 Paint Type 7.2 7.3 Paint Shade Paint Thickness Powder coated. Pure Polyester base Grade‐A, structure finish. RAL7032 ‘Siemens Grey’ Minimum 50 microns 8.0
MIMIC DIAGRAM
9.0
Colored mimic diagram and symbols showing the exact System representation of the system shall be provided in the front 8.1 Representation of control panels and it shall be properly align with all discrepancy type control switch of panels. Mimic diagram shall be made preferably of painted Aluminum or plastic of approved fast color material, which shall be screwed on to the panel and can be easily cleaned. 8.2 Material Painted overlaid mimic is also acceptable. The mimic bus shall be 2‐3 mm thick. The width of the mimic bus shall be 12mm for bus bars and 10 mm for other connections. Discrepancy type switches are to be used for breaker and 8.3 Mimic Indications isolator control indication and semaphore indicators shall be used for earth switch position. NAME PLATES & MARKINGS
9.1 Provision of Nameplates 9.2 Nameplate Material 9.3 Markings All equipment mounted on front side as well as equipment mounted inside the panels shall be provided with individual name plates with equipment designation engraved. Also, large and bold name plate carrying the feeder identification numbers shall be provided for circuit / feeder designation on the top of each panel on front as well as rear side. All front mounted equipment shall be also provided at the rear with individual name plates engraved with tag numbers corresponding to the one shown in the panel internal wiring to facilitate easy tracing of the wiring. Non‐rusting metal or 3 ply lamicoid. Nameplates shall be black with white engraving lettering. Stickers are not allowed. Each switch shall bear clear inscription identifying its function. Similar inscription shall also be provided on each device whose function is not other wise identified. If any switch or device does not bear this inscription separate nameplate giving its function shall be provided for it. Switch shall also have clear inscription for each position indicating e.g. Trip‐
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Volume – I Technical Specification for 66KV Control & Relay Panel
Neutral close, ON‐OFF, R‐Y‐B OFF etc. 10.0 EARTHING 10.1 10.2 10.3 10.4 10.5 10.6 All panels shall be equipped with an earth bus securely fixed. The material and the sizes of the bus bar shall be 25 x Material 6 mm copper flat unless specified otherwise. All bolted joints in the bus will be affected by Earth Bus joints connection of two bolts. Hinged Doors Earthed through flexible copper braid. Instrument and All metallic cases of relays, instruments and other Relay Earthing panel mounted equipment including gland plate, shall be connected to the earth bus by copper wires of size not less than 2.5 mm2. The color code of earthing wires shall be green CT and PT circuit VT and CT secondary neutral shall be earthed at one Earthing place only at the terminal blocks through links. Panel Earthing 11.0 INSTRUMENTS 11.1 Mounting 11.2 Scale 11.3 11.3.1 11.3.2 11.3.3 11.3.4 Ammeters and Voltmeters Size Provision 11.4 Flush Mounting Instruments dial shall be with white circular scale and black pointer, black numerals and lettering with red marks at values corresponding to rated values. Taut Band, Moving iron type 96x96mm All panels Selector switch Accuracy Class Multifunction meter to be provided 0.5 or better. Three phase 4 Wire ‐ digital type with Modbus Output. 11.4.1 Provision 11.4.2 Accuracy Class All panels except bus‐coupler 0.5 or better. Provision as per IEC 61850 Protocol with serial port communication to be made. Scrolling facility with LCD display for parameters like power factor, kW, kWh, kVA, kVAR, current, voltage etc. 11.4.3 Communication Capability 11.4.4 Additional facility 97
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Volume – I Technical Specification for 66KV Control & Relay Panel
12.0 RELAYS
12.1 12.1.1 12.1.2 12.1.3 12.1.4 12.1.5 Protective Relays ‐ General features Microprocessor based with provision for multifunction protection and control, Technology and metering, monitoring, User machine interface, Functionality communication interface, self‐diagnosis functionalities. Mounting Flush Mounting, IP5X Hardware and software architecture shall be modular and disconnect able to adapt the Architecture protection and control unit to the required level of complexity as per the application. Relay shall utilize a user friendly setting and Programming and operating multilingual software in windows configuration environment with menus and icons for fast access to the data required. Serial communication interface for data transfer and configuration PC and SCADA using appropriate protocols as per IEC 61850. Relay Communication And in case of communication through optical fiber then necessary converter needs to be considered. 12.1.6 User Machine Interface 12.1.7 Relay Characteristics 12.1.8 Fault recording 12.1.9 General Features of Numerical Relays UMI with an alphanumeric key pad and graphical LCD display with backlight indicating measurement values and operating messages. Capability to access and change all settings and parameters. Relay shall integrate all necessary protections for different applications in accordance with IS and IEC. Relay shall provide wide setting ranges and choice of all IEC, IEEE and other tripping curves through a minimum of two setting groups. Facility for recording various parameters of faults with option to set the duration of fault record with maximum no. of data storage facility Measurement of Event Recording , Disturbance Recording, Harmonic Distortion , RMS Current values & Frequency, Peak and Rolling Current Values, Max. and Average current Values, Phase and or Neutral Angles , Max. and average voltage, Power and Energy, Apparent Power and Apparent Power and Apparent Energy with Time Synchronization. 98
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Volume – I Technical Specification for 66KV Control & Relay Panel
12.1.10 12.1.11 12.1.12 12.1.13 12.1.13 12.1.14 12.1.15 12.1.16 12.2 12.2.1 12.2.1.1 12.2.1.2 12.2.1.3 12.2.1.4 12.2.1.5
Relay shall be able to detect internal failures. A watchdog relay with changeover contact shall provide information about the failure. Reset Contacts Self reset contacts except for lockout relays Operation Indicators LEDs with pushbutton for resetting. Auxiliary supply As per requirement Bidder shall provide the reference list of the type Operational Data of relays offered Spare Contacts As per requirement of BRPL Test Facility Inbuilt with necessary test plugs. No. of Digital input / Digital output of any type of relay which shall be used in control and relay panel shall be as per BSES requirement and signal DI / DO of Numerical relay list only. Refer the attached tentative signal list of all feeders (Incoming/Out going, Trasformer & Transformer Monitoring Unit, Buscoupler & Bus PT). Protective Relays ‐ Requirement For 66kV Bus Bar Protection Numerical type, mounted on a separate panel with fault recording. CT wise supervision to be provided. Line Panel Relay‐1 Line current Differential function suitable through optical fiber communication, Distance Protection with multiple characteristics i.e Mho , Quadrilateral etc. Relay‐2 Directional and non‐ Directional 3‐phase over current and earth fault Protection Combining the functions of Relays‐1 & Relays‐2 in single relay is not acceptable Synchronizing Check Relay Bus Coupler 3 Phase Over current protection , Earth fault protection Capacitor feeder Three phase over current protection Earth fault protection Neutral unbalance (separate relay) Under voltage relay Over Voltage relay Timer for ON time delay. Under Current protection Self diagnosis Transformer Feeder/Panel
Relay – 1
• Differential protection, with software based ratio
and vector correction without ICT.
• REF protection for the star side.
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Volume – I Technical Specification for 66KV Control & Relay Panel
12.3
Relay – 2
• Overcurrent protection
• Earth fault protection
Relay – 3
Transformer monitoring relay including AVR
Features or equivalent & the no. of DI / DO Shall
be as per BSES Requirement
Relay 1, 2 &3 are separate relays. Combining all
the functions of relay 1, 2&3 in a single relay is not
acceptable
Auxiliary relays - General Features
12.3.1 12.3.2 Type Reset Characteristic 12.3.3 12.3.4 12.3.5 12.3.6 12.3.7 12.4 12.4.1 12.4.2 12.4.3 Static or electromechanical. Self reset contacts except for lockout relays Hand reset operation indicators or LEDs with Operation Indicators pushbutton for resetting. Lockout relay Manual reset type Auxiliary supply As per requirement Bidder shall provide the reference list of the Operational Data type of relays offered Spare Contacts As per requirement of BRPL Auxiliary relays ‐ Requirement To be provided with anti‐pumping (94), Each Panel Lockout (86), DC fail (80) and trip circuit supervision (95) relays. Provision for multiplication of auxiliary contact of breakers, isolators and earth switches to be made in each panel using latching relays. Each Panel Multiplied contacts to be used for interlocks and indications. NO / NC Contact which shall be use for contact multiply shall be as per protection scheme requirement. Incoming and Outgoing Provision of PT supply supervision and suitable Feeder Panels automatic selection scheme between Line PT and Bus PT supplies for uninterrupted metering. 13.0 ANNUNCIATION
13.1
Type
13.2
Mounting
13.3
Facia
13.4
Push Buttons
Static type along with alarm. Annunciations shall
be repetitive type and shall be capable of
registering the fleeting signal. Facia test facility
should also be provided
Flush mounted
Minimum 24 Nos. Facia along with appropriate
labels on each facia.in each panel
Push buttons for test, accept and reset to be
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Volume – I Technical Specification for 66KV Control & Relay Panel
13.5
Potential Free Contacts
provided
To be provided for event logger
Sequence of operation of the annunciator shall be as follows:
S No
1.
2.
3.
4.
5.
6.
Alarm
Condition
Normal
Abnormal
Accept
Return to normal
Reset
Reset before
return to normal
Visual
Annunciation
Off
Flashing
Steady on
Steady On
Off
Flashing
Fault Contact
Open
Close
Close
Open
Open
Close
Audible
Annunciation
Off
On
Off
Off
Off
On
14.0 INDICATIONS
14.1
Indicating Lamps
14.1.1
Breaker On
Flush mounted Clustered LED type with rear
terminal connections. Lamp Cover to be screwed
type an moulded from heat resistant material
Red
14.1.2
Breaker Off
Green
14.1.3
Spring Charged
Blue
14.1.4
DC control supply fail
Amber
14.1.5
Auto trip
Amber
14.1.6
Yellow
14.1.7
Heater Circuit healthy
Trip Circuit Healthy
14.1.8
PT supply
R, Y, B
14.1.9
Hooter with isolation switch
14.2
Position Indicators
For AC and DC supply failure
Semaphore type indicators shall be provided for
mimic diagrams
White
15.0 SELECTOR SWITCHES & PUSH BUTTONS
15.1
Selector Switch
15.1.1
TNC Switch
15.1.2
Local/SCADA selector switch
All the selected selector switch shall be only
discrepancy type Flush Mounted with
shrouded terminals
Pistol Grip type, Lockable with spring return to
normal position
4 pole
15.1.3
Ammeter selector switch
6way 7 position
15.1.4
Voltmeter selector switch
6 way 7 position
15.1.5
For heater/illumination circuit
15.1.6
Rotary On/Off Switches
Rating of switches
15.2
Push button
Flush Mounted with shrouded terminals
15.2.1
Accept Push Button
Black Color-Trip alarm/DC fail alarm
16 A
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Volume – I Technical Specification for 66KV Control & Relay Panel
15.2.2
Reset Push Button
Yellow Color- Trip alarm/DC fail alarm
15.2.3
Test Push Button
Blue Color
15.2.4
Rating
10A
16.0 ACCESSORIES
16.1
Space heaters
16.2
Socket and switch
16.3
MCBs and Fuses
16.4
Panel illumination
Thermostat controlled with switch for isolation
240V, 5A socket to be provided in each panel
with on-off switch
Provision for receiving, distribution, isolation
and fusing of DC and AC supplies to various
control circuits should be made using MCBs
and Fuses of appropriate ratings.
240V AC illumination lamp controlled by panel
door switch to be provided in each panel
17.0 TESTING & INSPECTION
17.1
Type tests
17.1.1
Type test report validity
17.2
Acceptance and Routine tests
17.3
17.4
17.5
17.6
Product must be type tested as per Indian
Standards or IEC
Last five years from the date of bid submission
As per specifications and relevant standards.
Charges of these tests shall be deemed to be
included in the equipment price. Purchaser
reserves the right to witness all the tests.
Notice to Purchaser for conducting
tests
Test reports of acceptance and
routine test before dispatch
Stage and Final Inspection
Submission Of QAP
Deliverable
17.7
Training
17.8
At least three weeks in advance
Six copies to be submitted.
All the Qty. of Panels will be inspected by
BSES as per approved QAP .
QAP will be submitted by suppliers with
submission of Schematic Drawings.
1.As Built Drawing of panel 6 Sets
2. Maintenance Manuals – 2CD / DVD Soft
Copy , 6 Set of Hard Copy
3. Relay and equipments Catalogues &
Manuals
4. Relay Settings & Maintenance Manuals
5. Relays software and connection/
communication cables
Training on relays and equipment operations
shall be provided to the officials of BRPL will
be in the Scope of Suppliers.
18.0 DRAWINGS & DATA SUBMISSION
18.1
18.1.1
18.1.2
Submissions along with the bid
Duly filled GTP and copy of specification/
Bill of material
GA/ Cross sectional drawing of panel/SLDs/
Wiring diagrams
102
2 copies + 1 soft copy
2 copies + 1 soft copy
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Volume – I Technical Specification for 66KV Control & Relay Panel
18.1.4
18.1.5
18.1.6
Calculations for MCBs, MCCBs, Fuses and
stabilizing resistors etc
Catalogues and Manuals for all equipments
Test Reports
Deviations from this specification
18.1.7
Type test report
18.1.8
Reference List of customers
18.1.9
Recommended spares and consumables
18.1.10
18.2
18.2.3
18.2.4
Manufacturer's quality assurance program
Submissions after award of contract
Duly filled GTP and copy of specification/
Bill of material
GA/ Cross sectional drawing of panel/SLDs/
Wiring diagrams
Calculations for sizing of various equipment
Catalogues and Manuals for all equipments
18.2.5
Deviations from this specification
18.2.6
Foundation Plan
Calculations for sizing of various
components
Type test reports
Submissions prior to dispatch
Inspection and test reports/ compliance
report by manufacturer
As Built drawings/GA/SLDs and Wiring
diagrams
Calculations for sizing of various equipment
Catalogues and Manuals for all equipments
Test certificates
Drawing and document sizes
Approved Make of components for 66
KV Switchgear Panel
Numerical Relays
Auxiliary Electromechanical Relays
Contactor / Auxiliary Relays
Analog Ammeter / Voltmeter
Indication Led , Lamp
Push Button
Field Terminal Block
MCB
Hooter
Panel Light
Power Socket
Multifunction Meter
18.1.3
18.2.1
18.2.2
18.2.7
18.2.8
18.3
18.3.1
18.3.2
18.3.3
18.3.4
18.3.5
18.4
18.4.0
18.4.1
18.4.2
18.4.3
18.4.4
18.4.5
18.4.6
18.4.7
18.4.8
18.4.9
18.4.10
18.4.11
18.4.12
103
2 copies + 1 soft copy
1 copy
2 copies
For type, size and rating of
equipment offered.
For last five years with units of
similar design and rating
For five years of operation along
with price list
To be provided
4 copies
4 copies
4 copies
1 copy
Approved in writing before award of
contract
Showing all views and sections
For all brought out items
1 set
6 copies + 1 soft copy
6 copies + 1 soft copy
6 copies + 1 soft copy
6 copies + 1 soft copy
Standard size paper A3 and A4
ABB / SIEMENS
ABB / Areva / Schneider
Schneider Electric / Siemens / ABB
AE / Rishabh
Teknic
Teknic
Phoneix / Elemex / Connect well
Schneider / Siemens / L&T/ABB
Alan
Philips / Bajaj / Surya
Anchor / Reputed make
Rishab / Socomec
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Volume – I Technical Specification for 66KV Control & Relay Panel
18.4.13
18.4.14
18.4.15
18.4.16
18.4.17
Wires for wiring
Test Terminal Block
Control Switch
Annuciator Window
Discrepancy switch
KEI / Polycab / Finolex
Areva / IMP/Nelster
Areva / Switron
Alan / Minilec
BSES approved Make Only
19.0 DEVIATIONS
Deviation from this specification, if any, shall be clearly brought out in the offer. Unless owner
explicitly accepts such deviations, it shall be considered that the offer fully complies with the
specification.
20.0 Tentative SCADA Signal list for reference which may be change during detail engineering. List of Abbreviations
AI - Analog Input/Analog Values
MV - Measured Value
MFM - Multi Function Meter
DCO - Double Command Output
DPI - Double Point Indication
SCO - Single Command Output
SPI - Single Point Indication
Signals - 33 & 66KV Incomers/Out Going
Breaker ON/OFF
Front Bus (89A) ISO ON/OFF (In-Case of O/D)
Rear Bus (89B) ISO ON/OFF (In-Case of O/D)
LINE ISO (89L) ON/OFF (In-Case of O/D)
Earth Switch (89LE) -1&2 On/OFF (In-Case of O/D)
Breaker in service/Test (In-case of I/D BKR)
Trip Ckt Healthy
Spring Charge
Auto Trip(86) Operated
SF6 Pressure Low/Lock Out
VT fuse Fail
Panel DC Fail
L/R Switch in Local/Remote
LBB Operated
104
Signal
Type
DPI
DPI
DPI
DPI
DPI
DPI
SPI
SPI
SPI
SPI
SPI
SPI
DPI
SPI
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for 66KV Control & Relay Panel
Relay Int Fault.
Over Current Operated
Earth Fault Operated
DIFF.Prot Operated
DIST.Ptot Operated
BKR CLS/OPN COMMAND
Front Bus (89A) ISO OPN/CLS COMMAND (In-Case of O/D)
Rear Bus (89B) ISO OPN/CLS COMMAND (In-Case of O/D)
LINE ISO (89L) OPN/CLS COMMAND(In-Case of O/D)
AutoTrip(86) relay reset from Remote
SPI
SPI
SPI
SPI
SPI
DCO
DCO
DCO
DCO
SCO
3Phase R,Y,B -Current&Voltage,Active&Reactive
Power,PowerFactor,Max.Demand,Neu.Current
AI/MV
Fault Current Levels/Disturbance Record/
If Any Fault Graphs for Remote diagnosis purpose.
AI
Signals - 33 & 66KV Transformer
Breaker ON/OFF
Front Bus (89A) ISO ON/OFF (In-Case of O/D)
Rear Bus (89B) ISO ON/OFF (In-Case of O/D)
Trf ISO (89T) ON/OFF (In-Case of O/D)
Earth Switch (89LE) -1&2 On/OFF (In-Case of O/D)
Breaker in service/Test (In-case of I/D BKR)
Trip Ckt Healthy
Spring Charge
Auto Trip(86) Operated
Differential Operated
LBB Operated
REF/SEF Prot Operated
SF6 Pressure Low/Lock Out
Panel DC Fail
L/R Switch in Local/Remote
Relay Int Fault.
Over Current Operated
Earth Fault Operated
BKR CLS/OPN COMMAND
Front Bus (89A) ISO OPN/CLS COMMAND (In-Case of O/D)
Rear Bus (89B) ISO OPN/CLS COMMAND (In-Case of O/D)
Trf ISO (89LT) OPN/CLS COMMAND(In-Case of O/D)
AutoTrip(86) relay reset from Remote
3Phase R,Y,B -Current&Voltage,Active&Reactive
Power,PowerFactor,Max.Demand,Neu.Current
Fault Current Levels/Disturbance Record/
If Any Fault Graphs for Remote diagnosis purpose.
Transformer - RTCC/A-Eberle Signals
105
Signal
Type
DPI
DPI
DPI
DPI
DPI
DPI
SPI
SPI
SPI
SPI
SPI
SPI
SPI
SPI
DPI
SPI
SPI
SPI
DCO
DCO
DCO
DCO
SCO
AI/MV
AI
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for 66KV Control & Relay Panel
A-Eberle Unit Faulty/DC Fail
Oil Temp Alarm
Oil Temp trip
Winding Temp Alarm
Winding Temp Trip
Buchlotz Alarm
Buchlotz Trip
PRD TRIP
OLTC OSR
MOG/LOW Oil level Alarm
SPR Trip
OSR Main Tank
L/R Switch in Local/Remote
Auto/Manual Mode
Fan Fail
Tap Changer Fail
OLTC Out of Step/Stuck Up/Motor trip
Tap Rise/Tap Low Command
Oil Temp
Winding Temp
Tap Position
SPI
SPI
SPI
SPI
SPI
SPI
SPI
SPI
SPI
SPI
SPI
SPI
DPI
DPI
SPI
SPI
SPI
DCO/RCO
AI
AI
AI
Signals - 33 & 66KV BusCoupler
Signal
Type
DPI
DPI
DPI
DPI
DPI
DPI
SPI
SPI
SPI
SPI
SPI
SPI
SPI
DPI
SPI
SPI
SPI
SPI
DCO
DCO
DCO
Breaker ON/OFF
Front Bus (89A) ISO ON/OFF (In-Case of O/D)
Rear Bus (89B) ISO ON/OFF (In-Case of O/D)
Earth Switch (89AE-1&2) - On/OFF (In-Case of O/D)
Earth Switch(89BE-3&4) - On/OFF (In-Case of O/D)
Breaker in service/Test (In-case of I/D BKR)
Trip Ckt Healthy
Spring Charge
Auto Trip(86) Operated
SF6 Pressure Low/Lock Out
VT fuse-1 Blown
VT fuse-2 Blown
Panel DC Fail
L/R Switch in Local/Remote
LBB Operated
Relay Int Fault.
Over Current Operated
Earth Fault Operated
BKR CLS/OPN COMMAND
Front Bus (89A) ISO OPN/CLS COMMAND (In-Case of O/D)
Rear Bus (89B) ISO OPN/CLS COMMAND (In-Case of O/D)
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Volume – I Technical Specification for 66KV Control & Relay Panel
AutoTrip(86) relay reset from Remote
3Phase R,Y,B - Current ,BUS PT-01 & BUS PT02 3Phase
votages.
Fault Current Levels/Disturbance Record/
If Any Fault Graphs for Remote diagnosis purpose.
SCO
Signals - 33 & 66KV CAP Bank
Signal
Type
DPI
DPI
DPI
DPI
DPI
SPI
SPI
SPI
SPI
SPI
SPI
SPI
SPI
DPI
SPI
SPI
SPI
SPI
SPI
SPI
DCO
DCO
DCO
DCO
AI/MV
Breaker ON/OFF
Front Bus (89A) ISO ON/OFF (In-Case of O/D)
Rear Bus (89B) ISO ON/OFF (In-Case of O/D)
CAP Bank ISO ON/OFF (In-Case of O/D)
Earth Switch On/OFF (In-Case of O/D)
Trip Ckt Healthy
Spring Charge
Auto Trip(86) Operated
SF6 Pressure Low/Lock Out
VT fuse Blown
Cap Discharge Time
Netural Displacement
Panel DC Fail
L/R Switch in Local/Remote
LBB Operated
Relay Int Fault.
Over Current Operated
Earth Fault Operated
Under Voltage Prot.Operated
Over Voltage Prot.Operated
BKR CLS/OPN COMMAND
Front Bus (89A) ISO OPN/CLS COMMAND (In-Case of O/D)
Rear Bus (89B) ISO OPN/CLS COMMAND (In-Case of O/D)
CAP Bank ISO OPN/CLS COMMAND( In-case of O/D)
3Phase R,Y,B - Current&Voltage,Reactive Power,Neu.Current
Fault Current Levels/Disturbance Record/
If Any Fault Graphs for Remote diagnosis purpose.
AI/MV
AI
AI
Signal
Type
DPI
DPI
DPI
DPI
DCO
DCO
Signals - BUS PT-1&2
BUS A (89A) ON/OFF
BUS B (89B) ON/OFF
Earth Switch (89LE) - 1 On/OFF
Earth Switch (89LE) - 2 On/OFF
BUS-A ISO OPN/CLS COMMAND
BUS-B ISO OPN/CLS COMMAND
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Volume – I Technical Specification for 66KV Control & Relay Panel
Signals - Fire Fighting
System ON
FIRE Fighting in Progress
FIRE Alarm/Common Alrm
Operated
Cylinder Pr.Low
DC Fail
System Out Of Service
TCIV Closed
FIRE System Tripping
Signal
Type
SPI
SPI
SPI
SPI
SPI
SPI
SPI
SPI
108
MFM - Signals
Data Type
R-Phase Current
Y-Phase Current
MV/MFI
MV/MFI
B-Phase Current
Neutral Current
R-Y Phase Voltage
Y-B Phase Voltage
B-R Phase Voltage
Active Power
Reactive Power
Power Factor
Maximum Demand
THD
MV/MFI
MV/MFI
MV/MFI
MV/MFI
MV/MFI
MV/MFI
MV/MFI
MV/MFI
MV/MFI
MV/MFI
Specification for
OUTDOOR
POTENTIAL TRANSFORMER
(33 & 66KV)
Specification no. SP-PTLU-01-R1
Prepared by:
Checked by :
Approved by:
Name
Name
Sign
Sign
DS
HPB
Name
DG
Tanu
Meenakshi
K.K.Alla
109
Rev
Date
Sign
01
29 -Jan-05
02
16-July-14
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for 66KV Outdoor PT
Record of Revision
Sl.
no.
1.
Revision
no.
R1 Clause
No.
2.3.2 2.
R1 3.0.0 3.
R1 6.1.1 4.
R1 Annexure C, 10.4 Nature of change
Approved by
Material of tank construction shall be hot dip galvanized with minimum thickness of 610gm/sq mm ABIL included in approved makes of insulators Type Test to be conducted from CPRI/ERDA Accuracy class of metering core shall be 0.2 MDB/KKA 110
MDB/KKA MDB/KKA MDB/KKA BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for 66KV Outdoor PT
General Specification
1.0
CODES & STANDARDS:
Materials, equipment and methods used in the manufacture of Potential Transformer shall
conform to the latest edition of following –
National Standard
Standard Code
IS-3156
(Part I to IV)
IS-4146
IS-2099
IS-731
IS-335
IS-9676
IS-5561
IS-5621
IS-3156 (Part I to IV)
IS-4146
IS-2099
IS-731
Standard Description
Specification for Voltage transformer.
Application guide for voltage transformer.
High voltage porcelain bushings
Insulator for O/H power line
New insulating oil for transformer and switchgear.
Reference ambient temperature of electrical equipment
Specification of electric power connectors
Hollow insulator for use in electrical equipments
Specification for Voltage transformer.
Application guide for voltage transformer.
High voltage porcelain bushings
Insulator for O/H power line
Indian Electricity Rules (relevant safety regulation of CEA)
Indian electricity act
CBIP manual
2.0 MAJOR DESIGN CRITERIA & PARAMETERS OF THE PT
Description
Requirement / Rating
2.1.0
2.1.1
2.1.2
2.1.3
2.1.4
System
Voltage
Frequency
Fault level
Earthing
2.2.1
Type
2.2.2
Construction feature
2.3.0
2.3.1
Major Parts
Tank
66KV
33KV
66KV ± 10%
33KV ± 10%
50HZ ± 5%
50HZ ± 5%
31.5KA for 3secs.
26.3KA for 3secs.
Solidly grounded
Single phase, outdoor, dead tank type, oil
immersed, self cooled type.
Oil immersed PT shall be hermetically sealed
to eliminate breathing and to prevent ingress
of air and moisture.
2.3.2
Material of Construction
2.3.3
Tank Feature
Tank shall be of Galvanized Steel. Minimum
galvanizing thickness shall be 610gm/sq mm
The tank shall be provided with oil draining
plug, Oil level gauge glass.
111
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for 66KV Outdoor PT
2.3.4
Oil Expansion
2.3.5
Core
2.4.0
2.4.1
Winding
Material
2.4.2
Winding Insulating material
2.4.3
Winding Insulation
2.4.4
Design features
2.5.0
Insulating oil
Stainless steel bellow or diaphragm shall be
provided to take care of oil expansion
High grade, non ageing, low loss, high
permeability, cold rolled grain oriented silicon
steel lamination.
Electrolytic Copper
Class A, non catalytic, inert to transformer oil,
free from compounds liable to ooze out, shrink
or collapse.
Uniform
Winding shall be capable of desired output as
per specified limits without exceeding
permissible temperature rise.
Class 1 new mineral insulating oil as per IS
335, shall be certified not to contain PCBs.
Anti oxidant inhibitor if recommended shall be
subject to Purchaser’s approval.
2.5.1
Type
2.6.0
2.6.1
Bushings and Terminations
Type
2.6.2
Termination on HV side bushing
2.6.3
Termination of LV side
2.6.4
Termination of Earth terminal of HV
winding
2.6.5
2.8.1
Terminal marking
Minimum creepage distance of
bushing
Protected creepage distance
2.9.1
Over Voltage factor
2.10.1
Atmospheric protection for clamp
and fitting of iron and steel
2.10.2
Gland Plate
2.10.3
Cable entry
2.11.1
Earthing
2.7.1
Porcelain bushing
The HV Terminal shall be of copper.
Termination shall be by bimetallic of
Aluminum alloy grade A6 suitable for Twin
Zebra ACSR conductor..
The secondary terminals shall be provided in
IP55 Box with Brass/copper stud type
terminals
accessible
from
front
with
removable cover.
The earth terminal of HV winding shall be
bought out in secondary Terminal box by
bushing. This shall be connected with body
earth terminal with flexible copper lead
through a link.
Terminals shall be marked as per IS 3156
31 mm/KV
At least 50 % of total creepage distance
1.2 times for continuous rating and 1.5 times
for 30 seconds.
Hot dip galvanizing as per IS 2633
Min. 3 mm thick detachable with three
knockout holes of 3/4 inch.
Bottom for all cables
The PT assembly comprising of the chasis,
frame work and fixed parts of metal casing
shall be provided with two separate body
earthing terminals.
112
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Volume – I Technical Specification for 66KV Outdoor PT
3.0
FITTINGS & ACCESSORIES ON POTENTIAL TRANSFORMER
3.1.0
3.1.1
3.1.2
3.1.3
3.1.4
3.2.5
3.3.6
3.4.0
4.0
Required
Insulator
CJI/JSI/WSI/Modern/Saravana/BHEL/ABIL
QUALITY ASSURANCE
5.1
5.2
6.0
Required
Anodized Aluminum 16SWG
SATIN SILVER
Black
Etching
Required
Required
APPROVED MAKE OF COMPONENTS
4.1.0
5.0
Rating and Diagram Plate
Material
Background
Letters, diagram & border
Process
Name plate details
Terminal marking of Primary and
secondary terminals.
Drain Plug on tank Base
Vendor quality plan
Inspection point
To be submitted for purchaser approval.
To be mutually identified and agreed in
quality plan.
PROGRESS REPORTING
6.1
Out Line Document
6.2
Detailed Progress Report
To be submitted for purchase approval for
outline of production, inspection, testing,
inspection, packing, dispatch, documentation
programme.
To be submitted to purchaser once a month
containing
i)
ii)
iii)
iv)
v)
Progress on material procurement
Progress on fabrication (As applicable)
Progress on assemble (As applicable)
Progress on internal stage inspection
Reason
for any delay in total
programme
vi) Details of test failures if any in
manufacturing stages
113
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Volume – I Technical Specification for 66KV Outdoor PT
vii) Progress on final box up constraints /
Forward path
7.0
DRAWING, DATA & MANUALS
7.1.0
To be submitted along with bid
7.2.0
After award of contract, seller has
to submit mentioned drawings for
buyer’s Approval (A ) / Reference
(R)
114
Seller has to be submitted :
i)
Tentative GA /cross sectional
drawing of product showing all the
views / sections
ii)
Detailed reference list of customers
already using the offered product
during the last 5 years with particular
emphasis on units of similar design
and rating
iii)
Completely filled GTP
iv)
Deviations from this specification.
Only deviations approved in writing
before award of contract shall be
accepted.
v)
Details of manufacturer’s quality
assurance
standards
and
programme and ISO 9000 series or
equivalent national certification
vi)
Type test report shall be submitted
for the type , size & rating of product
/ equipment offered along with bid in
case the type test report for identical
product is not available then type
report of higher size / rating shall be
submitted for review. They shall be
considered valid 5 years from date of
test.
vii)
Complete product catalogue and
manual along with the bid.
viii)
Recommended spare parts and
consumables items for 5 years of
operation with prices and spare parts
catalogue with list for future
requirements.
i)
Programme for production and
testing (A)
ii)
Guaranteed Techinal Particulars (A)
iii)
Calculations to substantiate choice of
electrical , structural , mechanical
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for 66KV Outdoor PT
iv)
v)
vi)
vii)
viii)
ix)
x)
xi)
7.3.0
Submittals
dispatch
required
prior
to
xii)
i)
ii)
iii)
7.4.0
7.5.0
8.0
component size / ratings (A)
Detailed dimensional drawing for all
components, general arrangement
drawing showing detailed component
layout and the detailed schematic
and
wiring
drawings
for
all
components (like marshalling box)
Terminal arrangement & cable box
details etc. (as applicable) (A)
Drawing for major components (A)
Rating & Diagram plate (A)
Detailed loading drawing to enable
the buyer to design and construct
foundations (as applicable ) (R)
Transport / Shipping dimensions with
weights,
wheel
base
details,
untanking height etc. (As applicable )
(R)
List of makes of all fittings and
accessories (A)
Detailed
installation
and
commissioning instructions ( R)
Quality plan
Inspection and test reports, carried
out in manufacturer’s work (R )
Test certificates of all bought out
items
Operation
and
maintenance
instruction as well as trouble
shooting chart / manuals.
iv)
Standard size paper A0, A1 , A2, A3, A4
Drawing and document size
No of drgs./Documents required at
diffderent stages
As per Annexure A scope of supply
INSPECTION & TESTING
8.1.0
Inspection and Testing
during manufacture
8.2.0
Tank
8.3.0
Porcelain
i)
ii)
iii)
i)
ii)
Checking of dimensions as per approved drawing.
Checking for leakage by pressure testing.
Thickness of Galvanization shall be 610gm/ sq
mm
Check dimension.
Check finish of sealing surface.
115
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for 66KV Outdoor PT
9.0
8.4.0
Insulating Materials
8.5.0
Copper conductor
8.6.0
Oil
8.7.0
8.8.0
Secondary terminals
Routine tests
8.9.0
Type Tests
8.10.0
Acceptance test
iii)
Check creepage distance.
iv)
Check for routine electrical test.
v)
Check for porosity and temperature cycle test.
i)
Sample check for physical properties of materials.
ii)
Check for dielectric strength.
iii)
Visual and dimensional checks.
i)
Check for dimension.
ii)
Check for elongation.
iii)
Check for unidirectional scrap.
iv)
Check for heat shock.
i)
Check for break down voltage.
ii)
Check for density.
iii)
Check for flash point.
iv)
Check for moisture content.
v)
Check for neutralization value.
vi)
Check for inter facial tension at 27 Deg c.
vii)
Check for sludge content.
viii)
Check for specific resistance.
ix)
Check for pour point.
i)
Check for one min AC Test
Tests shall be carried out in accordance with IS 3156
a) On one PT of each rating and type tested from
CPRI/ERDA
b) All the test as per IS 3156
c) In case the product is never type tested earlier,
seller has to conduct the type tests from
CPRI/ERDA test labs on BSES order at their own
cost, before commencement of supply.
To be performed in presence of Purchaser at manufacturer
works:i)
Physical inspection of dimensions and BOM.
ii)
Verification of terminal marking and polarity.
iii)
Power frequency dry withstand tests on primary
winding.
iv)
Power frequency dry withstand tests on secondary
winding.
v)
Partial discharge test ( this shall be only for future
reference)
vi)
Determination of ratio and phase angle errors
according to the appropriate designation or
accuracy class.
PACKING , SHIPPING, HANDLING AND STORAGE
9.0.0
9.1.1
Packing
9.1.2
Packing for accessories
and spares
Packing protection
Against corrosion , dampness, heavy rains, breakage and
vibration
Robust wooden non returnable packing case with all the
above protection and identification labels.
116
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Volume – I Technical Specification for 66KV Outdoor PT
9.1.3
Packing identification
label
9.1.4
Shipping
9.1.5
Handling and Storage
10.0
In each packing case, following details are required :
i) Individual serial number
ii) Purchaser’s name
iii) PO number (along with SAP item code , if any) &
date
iv) Equipment Tag no. (if any)
v) Destination
vi) Manufacturer / Supplier’s name
vii) Address of manufacturer’s / supplier’s its agent
viii) Description and quantity
ix) Country of origin
x) Month and year of manufacturing
xi) Case measurement
xii) Gross and net weight in kilograms
xiii) All necessary slinging and stacking instructions.
i)
The bidder shall ascertain at an early date and
definitely before the commencement of
manufacture, any transport limitations such as
weights, dimensions, road culverts, overhead
lines, free access etc. from the manufacturing
plant to the project site, and furnish to the
purchaser confirmation that the proposed
packages can be safely transported, as normal
or oversize packages, upto the plant site. Any
modification required in the infrastructure and
cost thereof in this connection shall be brought
to the notice of the Purchaser.
ii)
The seller shall be responsible for all transit
damage due to improper packing.
Manufacturer instruction shall be followed. Detail
handling & storage instruction sheet / manual need to be
furnished before commencement of supply.
DEVIATIONS
Deviation from this specification shall be started in writing with the tender by reference to the
specification clause/ DTP/Drawing and a description of the alternative offer. In absence of such a
statement, it will be assured by the Buyer that the seller complies fully with this specification.
Annexure –A
Scope of supply
1.0
The scope of supply shall include following
1.1
Design, manufacture, assembly, testing at storages of manufacturing as per C l. 12 of this
specification, final testing at manufacturer works on completely assembled transformer
117
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for 66KV Outdoor PT
before dispatch, packing delivery and submission of all documentation for the Power
transformer with all accessories as below
Sr. No.
1.0
1.1
1.2
1.3
1.4
1.5
Description
Fully assembled PT with all major parts like Tank,
bushing, Primary terminal with connector and
secondary terminal box.
Galvanised steel structure for PT
Fixing Bolts for PT
Routine testing as per this specification
Type testing as per this specification
Submission of Documentation as detailed below
1.2
Supervision of testing & commissioning of PT as site
1.3
BOQ as followingSr. No.
Purchaser
Equipment Tag No.
/ SAP code
1
2
3
4
5
2.0
Scope of Supply
YES
NO
YES
YES
YES
YES
Location / Substation
name
Unit
Quantity
e.g. Santacruz
e.g. Alaknanda
No
No
e.g. 1
e.g. 1
Submission of documents
Submission of drawing, calculations, manual, catalogues, test report shall be as follows
Along with offer
Drawing
3 copies (Typical
drgs)
Calculations
3 copies
(Typical)
1 copy
Catalogues
Instruction
manual for the
transformer
Test Report
3.0
3.1
3.2
For Approval
after award of
contract
4 copies
Final after
approval
Remarks
6 copies + 1
soft copy in CD
4 copies
6 copies + 1
soft copy in CD
6 copies + 1
soft copy in CD
6 copies + 1
soft copy in CD
See clause 5.0
for various
drawing required
See clause 5.0
for details
1 copy
2 copy
Delivery Schedule
Delivery Period start date
Delivery Period end date
6 copies + 1
soft copy in CD
-
from data of purchase order
as agreed with supplier
118
Type test and
sample routine
test reports
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for 66KV Outdoor PT
3.3
Material dispatch clearance
Annexure – B
1.0.0
a)
b)
c)
d)
e)
f)
2.0.0
a)
b)
c)
d)
e)
f)
g)
-
after inspection by purchaser and written dispatch
clearance for purchaser
SERVICE CONDITIONS
Mumbai Atmospheric conditions
Average grade atmosphere
Heavy polluted , salt Laden, dusty, humid
with possibility of condensation
1000 M
Highest 45 deg C, Average 35 deg C
20 deg C
100 % Max
150 deg. C cm/W
3 as per IS 1893
3000 mm concentrated in four months
Maximum altitude above see level
Ambient Air temperature
Maximum ambient air temperature
Relative Humidity
Thermal Resistivity of Soil
Seismic Zone
Rainfall
Delhi Atmospheric conditions
Average grade atmosphere
Maximum altitude above see level
Ambient Air temperature
Maximum ambient air temperature
Relative Humidity
Thermal Resistivity of Soil
Seismic Zone
Rainfall
Wind Pressure
Heavy polluted , dry
1000 M
Highest 50 deg C, Average 40 deg C
0 deg C
100 % Max
150 deg. C cm/W
4 as per IS 1893
750 mm concentrated in four months
195 Kg/m2 up to 90 M elevation as per IS
875-1975
119
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for 66KV Outdoor PT
Annexure C1
GURANTEED TECHNICAL PARTICULARS FOR 66 KV PT
Sr.
No.
Description
1.0
Location of Equipment
2.0
3.0
Name of Manufacturer
Address & Contact details
4.0
Type
5.0
Manufacturer Model No
Reference design ambient
temperature
Reference Standard
Nominal system voltage
Highest system voltage
Basic Insulation level
Power frequency voltage
Type of cooling
Rated frequency (Hz)
Insulation Class
Rated Primary voltage
Rated secondary voltage
Number of secondary cores
CORE Specifications
Core - 1
Purpose
Rated Output
Class of accuracy
Ratio error
Phase angle error
Core - 2
Purpose
Rated Output
Class of accuracy
Ratio error
Phase angle error
Rated over voltage factor
- Continuous
- 30 Seconds
Temperature rise above an
ambient of 50Deg C at 1.2
times voltage factor for 30
seconds rating
- For Winding
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
18.1
18.2
18.3
18.4
18.5
18.6
19.0
19.1
19.2
19.3
19.4
19.5
20.0
20.1
20.2
21.0
21.1
Data By Purchaser
Project specific to be filled
up
Single phase, outdoor,
dead tank type, oil
immersed, self-cooled
hermetically sealed type.
50 Deg C
IS: 3156 (Part1 to 4)
66KV
72.5KV
325KVp
140KV
ONAN
50 Hz
A
66KV / √3
110V / √3
Two
Metering
50 VA
0.2
As per IS
As per IS
Protection
50 VA
3P
As per IS
As per IS
1.2 times
1.5 times
50 Deg C
120
Data By Supplier
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for 66KV Outdoor PT
21.2
22.0
22.1
22.2
23.0
24.0
25.0
26.0
27.0
28.0
29.0
30.0
31.0
32.0
33.0
34.0
- For Oil
Temperature rise above an
ambient of 50Deg C at 1.5
times voltage factor for 30
seconds rating
- For Winding
- For Oil
One minute power frequency
dry withstand voltage for 66 kV
PT (KV rms)
One minute power frequency
wet withstand voltage for 66
kV PT (KV rms)
1.2/50 microsecond impulse
withstand test voltage for 66
KV PT (KV rms)
One minute Power frequency
withstand voltage on
secondary winding
Minimum creepage distance in
mm for 66KV PT
Protective creepage distance
in mm for 66KV PT
Partial discharge test, whether
will be carried out Yes / No
Weight of core
Weight of oil
Total weight
Mounting details
Overall dimensions
40 Deg C
50 Deg C
40 Deg C
325 KVp
3KV
2250 mm
1125 mm
121
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Volume – I Technical Specification for 66KV Outdoor PT
Annexure –D RECOMMENDED SPARES (DATA BY SUPPLIER)
List of recommended spares as following –
Sr. No.
1
2
3
4
5
6
Description of spare part
Unit
122
Quality
Specification for
66KV OUTDOOR
CAPACITIVE VOLTAGE TRANSFORMER
(CVT)
Specification no. SP-CVT-01-R0
Prepared by:
Checked by :
Approved by:
Name
Name
Name
Sign
K.K.Alla
Tanu
Sign
Sign
Meenakshi
123
Rev
02
Date
16-July-14
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for 66KV Outdoor CVT
1.0
CODES & STANDARDS:
Materials, equipment and methods used in the manufacture of Potential Transformer shall
conform to the latest edition of following –
National Standard
Standard Code
IS-3156
(Part I to IV)
IS-4146
IS-2099
IS-731
IS-335
IS-9676
IS-5561
IS-5621
IS-3156 (Part I to IV)
IS-4146
IS-2099
IS-731
2.0
Standard Description
Specification for Voltage transformer.
Application guide for voltage transformer.
High voltage porcelain bushings
Insulator for O/H power line
New insulating oil for transformer and switchgear.
Reference ambient temperature of electrical equipment
Specification of electric power connectors
Hollow insulator for use in electrical equipments
Specification for Voltage transformer.
Application guide for voltage transformer.
High voltage porcelain bushings
Insulator for O/H power line
Indian Electricity Rules (relevant safety regulation of CEA)
Indian electricity act
CBIP manual
MAJOR DESIGN CRITERIA & PARAMETERS OF THE CVT
Description
Requirement / Rating
2.1.0
2.1.1
2.1.2
2.1.3
2.1.4
Rated Voltage
Highest System Voltage
Frequency
Fault level
Earthing
2.2.1
Type
66KV
72.5kV
50HZ ± 5%
31.5KA for 3secs.
Solidly grounded
Single phase, outdoor, dead tank type, oil
immersed, self cooled type.
2.2.2
Construction feature
Oil immersed CVT shall be hermetically
sealed to eliminate breathing and to prevent
ingress of air and moisture.
124
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Volume – I Technical Specification for 66KV Outdoor CVT
a) Shall comprise a capacitor divider unit
2.3.0
Features
2.4.0
2.4.1
Major Parts
Tank
2.4.2
Material of Construction
2.4.3
Tank Feature
2.4.4
Oil Expansion
2.4.5
Core
and an electromagnetic unit such that
secondary voltage of electromagnetic unit
is substantially proportional to and in
phase with the primary voltage applied to
capacitor divider units.
b) Capacitors shall be oil impregnated type
enclosed in inert gas atmosphere,
hermetically sealed.
c) The material and construction and
assembly of CVT shall be such that the
capacitance does not change with time
and the effect of temperature is minimum.
d) Provided with an over voltage suppressor
e) No radio interference when operated at
maximum service voltage
f) Reactance to be provided to minimize
draining of carrier signal in
electromagnetic unit
g) No radio interference when operated at
maximum service voltage
h) The CVT shall be designed to cover its
rated output range without any adjustment
of its electromagnetic unit.
i) Material used in insulation and assembly
of the winding shall be insoluble, non
catalytic and chemically inactive in hot
transformer oil and shall not be subjected
to a shrinking and seasoning process
j) CVT shall provide designed transient
response requirement as per IEC / IS i.e.
during transient oscillations following a
short circuit on primary side, the
secondary side output voltage shall not
fall to a value less than 10% of peak value
before short circuit within 20 milliseconds
k) The secondary terminal box shall include
necessary HRC fuses for protection of
secondary circuits and both the sides of
fuse shall be terminated on terminal block
for fuse supervision.
Tank shall be of high quality steel and shall be
Hot Dip Galvanized with galvanizing thickness
of 610gm/sq mm minimum.
The tank shall be provided with oil draining
plug, Oil level gauge glass.
Stainless steel bellow or diaphragm shall be
provided to take care of oil expansion
High grade, non ageing, low loss, high
125
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for 66KV Outdoor CVT
permeability, cold rolled grain oriented silicon
steel lamination.
2.5.0
2.5.1
Winding
Material
2.5.2
Winding Insulating material
2.5.3
Winding Insulation
2.5.4
Design features
2.6.0
Insulating oil
Electrolytic Copper
Class A, non catalytic, inert to transformer oil,
free from compounds liable to ooze out, shrink
or collapse.
Uniform
Winding shall be capable of desired output as
per specified limits without exceeding
permissible temperature rise.
Class 1 new mineral insulating oil as per IS
335, shall be certified not to contain PCBs.
Anti oxidant inhibitor if recommended shall be
subject to Owner’s approval.
2.6.1
Type
2.7.0
2.7.1
Bushings and Terminations
Type
2.7.2
Termination on HV side bushing
2.7.3
Termination of LV side
2.7.4
Termination of Earth terminal of HV
winding
2.7.5
2.8.1
Terminal marking
Minimum creepage distance of
bushing
Protected creepage distance
2.9.1
Over Voltage factor
2.10.1
Atmospheric protection for clamp
and fitting of iron and steel
2.10.2
Gland Plate
2.10.3
Cable entry
2.11.1
Earthing
2.12.1
External finish
2.8.1
Porcelain bushing
The HV Terminal shall be of copper.
Termination shall be by bimetallic of
Aluminum alloy grade A6 suitable for Twin
Zebra ACSR conductor/ 3inch Pipe Bus.
The secondary terminals shall be provided in
IP55 Box with Brass/copper stud type
terminals
accessible
from
front
with
removable cover.
The earth terminal of HV winding shall be
bought out in secondary Terminal box by
bushing. This shall be connected with body
earth terminal with flexible copper lead
through a link.
Terminals shall be marked as per IS 3156
31 mm/KV
At least 50 % of total creepage distance
1.2 times for continuous rating and 1.5 times
for 30 seconds.
Hot dip galvanizing as per IS 2633
Min. 3 mm thick detachable with three
knockout holes of 3/4 inch.
Bottom for all cables
The CVT assembly comprising of the chassis,
frame work and fixed parts of metal casing
shall be provided with two separate body
earthing terminals.
Shall be Hot Dip galvanized
126
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Volume – I Technical Specification for 66KV Outdoor CVT
3.0
FITTINGS & ACCESSORIES ON POTENTIAL TRANSFORMER
3.1.0
3.1.1
3.1.2
3.1.3
3.1.4
3.2.5
3.3.6
3.4.0
4.0
Required
Anodized Aluminum 16SWG
SATIN SILVER
Black
Etching
Required
Required
Required
APPROVED MAKE OF COMPONENTS
4.1.0
5.0
Rating and Diagram Plate
Material
Background
Letters, diagram & border
Process
Name plate details
Terminal marking of Primary and
secondary terminals.
Drain Plug on tank Base
Insulator
CJI/JSI/WSI/Modern/Saravana/BHEL/ABIL
TESTING & INSPECTION
5.1.0
Inspection and Testing
during manufacture
5.2.0
Tank
5.3.0
Porcelain
5.4.0
Insulating Materials
5.5.0
Copper conductor
5.6.0
Oil
5.7.0
5.8.0
Secondary terminals
Routine tests
5.9.0
Type Tests
i)
Checking of dimensions as per approved drawing.
ii)
Checking for leakage by pressure testing.
iii)
Thickness of Paint or Galvanization, as applicable
i)
Check dimension.
ii)
Check finish of sealing surface.
iii)
Check creepage distance.
iv)
Check for routine electrical test.
v)
Check for porosity and temperature cycle test.
i)
Sample check for physical properties of materials.
ii)
Check for dielectric strength.
iii)
Visual and dimensional checks.
i)
Check for dimension.
ii)
Check for elongation.
iii)
Check for unidirectional scrap.
iv)
Check for heat shock.
i)
Check for break down voltage.
ii)
Check for density.
iii)
Check for flash point.
iv)
Check for moisture content.
v)
Check for neutralization value.
vi)
Check for inter facial tension at 27
Deg c.
vii)
Check for sludge content.
viii)
Check for specific resistance.
ix)
Check for pour point.
i)
Check for one min AC Test
Tests shall be carried out in accordance with IS 3156
a) On one CVT of each rating and type (In CPRI/ERDA)
b) All the test as per IS 3156
127
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Volume – I Technical Specification for 66KV Outdoor CVT
b) In case the product is never type tested earlier, seller
has to conduct the type tests from CPRI/ERDA test labs on
BSES order at their own cost, before commencement of
supply.
To be performed in presence of Owner at manufacturer
works:i)
Physical inspection of dimensions and BOM.
ii)
Verification of terminal marking and polarity.
iii)
Power frequency dry withstand tests on primary
winding.
iv)
Power frequency dry withstand tests on
• secondary winding
5.10.0
•
Acceptance test
•
v)
vi)
6.0
Capacitor voltage divider
Low-voltage terminal of the capacitor voltage
divider.
Electromagnetic unit
•
Partial discharge test ( this shall be only for future
reference)
Determination of ratio and phase angle errors
according to the appropriate designation or
accuracy class.
DEVIATIONS
Deviation from this specification, if any, shall be clearly brought out in the offer. Unless owner
explicitly accepts such deviations, it shall be considered that the offer fully complies with the
specification.
128
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Volume – I Technical Specification for 66KV Outdoor CVT
Annexure –A
Scope of supply
1.0
The scope of supply shall include following
1.1
Design, manufacture, assembly, testing at storages of manufacturing as per C l. 12 of this
specification, final testing at manufacturer works on completely assembled transformer
before dispatch, packing delivery and submission of all documentation for the Power
transformer with all accessories as below
Sr. No.
1.0
1.1
1.2
1.3
1.4
1.5
Description
Fully assembled PT with all major parts like Tank,
bushing, Primary terminal with connector and
secondary terminal box.
Galvanised steel structure for PT
Fixing Bolts for PT
Routine testing as per this specification
Type testing as per this specification
Submission of Documentation as detailed below
1.2
Supervision of testing & commissioning of PT as site
1.3
BOQ as followingSr. No.
Purchaser
Equipment Tag No.
/ SAP code
1
2
3
4
5
2.0
Scope of Supply
YES
NO
YES
YES
YES
YES
Location / Substation
name
Unit
Quantity
e.g. Santacruz
e.g. Alaknanda
No
No
e.g. 1
e.g. 1
Submission of documents
Submission of drawing, calculations, manual, catalogues, test report shall be as follows
Along with offer
Drawing
3 copies (Typical
drgs)
Calculations
3 copies
(Typical)
1 copy
Catalogues
Instruction
manual for the
transformer
For Approval
after award of
contract
4 copies
Final after
approval
Remarks
6 copies + 1
soft copy in CD
4 copies
6 copies + 1
soft copy in CD
6 copies + 1
soft copy in CD
6 copies + 1
soft copy in CD
See clause 5.0
for various
drawing required
See clause 5.0
for details
1 copy
129
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Volume – I Technical Specification for 66KV Outdoor CVT
Test Report
3.0
3.1
3.2
3.3
2 copy
Delivery Schedule
Delivery Period start date
Delivery Period end date
Material dispatch clearance
6 copies + 1
soft copy in CD
-
Type test and
sample routine
test reports
from data of purchase order
as agreed with supplier
after inspection by purchaser and written dispatch
clearance for purchaser
130
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Volume – I Technical Specification for 66KV Outdoor CVT
Annexure – B
1.0.0
a)
b)
c)
d)
e)
f)
2.0.0
a)
b)
c)
d)
e)
f)
g)
SERVICE CONDITIONS
Mumbai Atmospheric conditions
Average grade atmosphere
Heavy polluted , salt Laden, dusty, humid
with possibility of condensation
1000 M
Highest 45 deg C, Average 35 deg C
20 deg C
100 % Max
150 deg. C cm/W
3 as per IS 1893
3000 mm concentrated in four months
Maximum altitude above see level
Ambient Air temperature
Maximum ambient air temperature
Relative Humidity
Thermal Resistivity of Soil
Seismic Zone
Rainfall
Delhi Atmospheric conditions
Average grade atmosphere
Maximum altitude above see level
Ambient Air temperature
Maximum ambient air temperature
Relative Humidity
Thermal Resistivity of Soil
Seismic Zone
Rainfall
Wind Pressure
Heavy polluted , dry
1000 M
Highest 50 deg C, Average 40 deg C
0 deg C
100 % Max
150 deg. C cm/W
4 as per IS 1893
750 mm concentrated in four months
195 Kg/m2 up to 90 M elevation as per IS
875-1975
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Volume – I Technical Specification for 66KV Outdoor CVT
Annexure ─ C: Guaranteed Technical Particulars 66 KV OUT DOOR CAPACITIVE
VOLTAGE TRANSFORMER
Description
1.0
Location of Equipment
2.0
3.0
Name of Manufacturer
Address & Contact details
4.0
Type
5.0
Manufacturer Model No
Reference design ambient
temperature
Reference Standard
Nominal system voltage
Highest system voltage
Basic Insulation level
Power frequency voltage
Type of cooling
Rated frequency (Hz)
Insulation Class
Rated Primary voltage
Rated secondary voltage
Number of secondary cores
CORE Specifications
Core - 1
Purpose
Rated Output
Class of accuracy
Ratio error
Phase angle error
Core - 2
Purpose
Rated Output
Class of accuracy
Total Simultaneous Burden
Total Thermal Burden
Ratio error
Phase angle error
Rated over voltage factor
- Continuous
- 30 Seconds
Capacitor Divider
High voltage Capacitor
Intermediate Voltage
Capacitor
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
18.1
18.2
18.3
18.4
18.5
18.6
19.0
19.1
19.2
19.3
19.4
19.5
19.4
19.5
20.0
20.1
20.2
21.0
21.1
21.2
Data By Purchaser
Project specific to be filled
up
Single phase, outdoor,
dead tank type, oil
immersed, self-cooled,
hermetically sealed type
50 Deg C
IS: 3156 (Part1 to 4)
66KV
72.5KV
325KVp
140KV
ONAN
50 Hz
A
66KV / √3
110V / √3
Two
Metering
50 VA
0.2
As per IS
As per IS
Protection
50 VA
3P
As per IS
As per IS
1.2 times
1.5 times
C1(pf)
C2(pf)
132
Data By Supplier
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for 66KV Outdoor CVT
21.3
21.7
21.8
22.0
Total Equivalent Capacitance
Rated temperature at which
above values are indicated.
Capacitance temperature
coefficient
Tan delta value of
capacitance
Carrier frequency coupling
Rated Intermediate Voltage
Natural frequency of coupling
23.0
Band Width
24.0
Series reactance/choke rated
Voltage & power frequency
withstand voltage
21.4
21.5
21.6
24.1
Temperature rise above an
ambient of 50Deg C at 1.2
times voltage factor for 30
seconds rating
- For Winding
24.2
- For Oil
24.0
25.0
25.1
25.2
26.0
27.0
28.0
29.0
30.0
31.0
32.0
33.0
34.0
35.0
Temperature rise above an
ambient of 50Deg C at 1.5
times voltage factor for 30
seconds rating
- For Winding
- For Oil
One minute power frequency
dry& wet withstand voltage of
capacitor
One minute power frequency
withstand voltage of H.F
terminal
1.2/50 microsecond impulse
withstand test voltage
One minute Power frequency
withstand voltage on
secondary winding
Corona extinction voltage
Max Radio Interference
voltage at 1.1xUm/√3
Minimum creepage distance
in mm
Protective creepage distance
in mm
Partial discharge test, whether
will be carried out Yes / No
Weight of core
Pf
Deg C
Pf
kHz
kHz
Deg C
Deg C
Deg C
Deg C
140kVrms
325 KVp
3KV
kV
V
2250 mm
1125 mm
133
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Volume – I Technical Specification for 66KV Outdoor CVT
36.0
37.0
38.0
39.0
Weight of oil
Total weight
Mounting details
Overall dimensions
Annexure –D RECOMMENDED SPARES (DATA BY SUPPLIER)
List of recommended spares as following –
Sr. No.
1
2
3
4
5
6
Description of spare part
Unit
134
Quality
BSES Bhawan, Nehru Place, New Delhi- 19
Specification
OUTDOOR CURRENT TRANSFORMER
(33 & 66 KV)
Specification no. SP-CTLU-01-R1
Prepared by:
Checked by :
Name
Name
Sign
Approved by:
Sign
DS
HPB
Name
DG
Tanu
Meenakshi
K.K.Alla
135
Rev
Date
Sign
01
29 -Jan-05
02
16-July-14
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for 66KV Outdoor CT
Record of Revision
Sl.
no.
1.
Revision
no.
R1 Clause
No.
2.2 2.
R1 3.0.0 3.
R1 6.1.1 4.
R1 5.
R1 Annexure C, 10.4 Annexure C, 10.7 6.
R1 Annexure C, 10.8 Nature of change
Approved by
All ferrous parts, CT tank and other metallic parts exposed to atmosphere shall be hot dip galvanised with galvanising thickness of 610gm/sqmm minimum. ABIL included in approved makes of insulators Type Test to be conducted from CPRI/ERDA Accuracy class of metering core shall be 0.2s Knee point voltage & corresponding exciting current (project specific) shall be greater than or equal to 40 (RCT+8) Magnetizing current at Vk/2 (project specific) shall be less than or equal to 30 mA MDB/KKA 136
MDB/KKA MDB/KKA MDB/KKA MDB/KKA MDB/KKA BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for 66KV Outdoor CT
1.0 CODES & STANDARDS:
The current transformer shall be designed, manufactured and tested in accordance with the
latest applicable Indian Standard, IEC standard and CBIP manuals as listed below –
National Standard
2.0
Standard Code
Indian electricity act
CBIP manual
IS- 335
IS-2705 (Part I to V)
IS-4201
IS-2099
IS-731
IS-335
IS-9676
IS-5561
IS-9676
IS-4201
IS-2099
IS-5621
Standard Description
New insulating oil
Specification for current transformer.
Application guide for current transformer.
High voltage porcelain bushings
Insulator for O/H power line
New insulating oil for transformer and switchgear.
Reference ambient temperature of electrical equipment
Specification of electric power connectors
Summation current transformer
Application guide for current transformer
High voltage porcelain bushings
Hollow insulator for use in electrical equipment
International Standard
Standard Code
IEC: 137
IEC: 185
IEC: 439
Standard Description
Bushing for alternating current above 1000V
Specification for current transformers
Specification for Terminal box / Marshalling box
DESIGN FEATURES
Description
2.1
Type
2.2
Construction
2.3
Core
2.4
Winding
2.5
Insulation
2.6
Insulation Oil
Requirement / Rating
Shall be dead tank type; oil immersed, self-cooled outdoor
type.
a) Oil immersed CT shall be hermetically sealed to
eliminate breathing and to prevent air and moisture. The
core and winding shall be provided in porcelain bushing.
Provision for oil expansion without breathing to be
provided (diaphragm or bellow as per manufacturer
design).
b) All ferrous parts, CT tank and other metallic parts
exposed to atmosphere shall be hot dip galvanized.
c) Galvanising thickness shall be 610gm/sqmm minimum
The core shall be of high-grade non-ageing, electrical silicon
laminated steel of low hysteresis loss and high permeability
to ensure high accuracy at both normal and over current
conditions. The saturation factor of the core shall be low
enough not to cause any damage to measuring instruments
in the event of maximum short circuit current.
The winding shall be suitable for simultaneous 100% full load
continuous rating. The winding shall be capable of desired
output as per specified limit.
The current transformer shall withstand satisfactorily the
dielectric test voltage corresponding to basic insulation level
specified.
The quantity of insulating oil in each current transformer shall
be best available and the complete specification of the oil
137
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Volume – I Technical Specification for 66KV Outdoor CT
3.0
2.7
Bushing
2.8
2.9
Creepage distance
Terminal Connectors
2.9.1
Primary
2.9.2
Secondary
2.10
Terminal Marking
The current transformers offered shall be supplied with
Aluminum- alloy terminal connector with bimetallic sleeve,
suitable for connection with single/double ACSR conductor.
All the secondary terminals shall be bought in IP55 box with
brass/ copper stud type terminals. The secondary terminals
shall be shorted by brass/copper links before dispatch.
Terminal box to be provided with earthing stud
Terminal marking shall be as per IS 2705
APPROVED MAKE OF COMPONENTS
3.1.0
3.2.0
4.0
shall be furnished with the tender. The current transformer
offered shall be hermetically sealed completely filled with
insulating oil with provision to replace the oil. Oil level
indication shall be provided.
Porcelain used in bushing manufacture shall be
homogenous, free from laminations, cavities and other flaws
or imperfections that might affect the mechanical or dielectric
quality. Glazing of the porcelain shall be uniform brown color
free blisters, burns and similar defects. The bushing shall be
designated to have ample insulation, mechanical strength
and rigidity.
Not less than 31mm /KV
Insulator
Terminals
JSI/WSI/Modern/Saravana/BHEL/ABIL
Connectwell / Elmex
NAME PLATE & TERMINAL MARKING
4.1.0
4.1.1
4.1.2
4.1.4
Name Plate
Material
Background
Letters, diagram &
border
Process
4.1.5
Name plate details
4.2.0
Danger plate on front
& rear side
4.1.3
Anodized Aluminium 16SWG
SATIN SILVER
Black
Etching
Manufacturer name & address, year of manufacturer, Serial
number and type designation, Rated Primary & secondary
current, rated frequency, rated output and accuracy class,
Highest system voltage, Rated Insulation level, Rated shorttime thermal current or short time factor with rated time,
Rated dynamic current, Reference Standard.
Not required
5.0 QUALITY ASSURANCE
5.1.0 Vendor quality plan
5.2.0 Inspection points
To be submitted for purchaser approval
To be mutually identified & agreed in
quality plan
138
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Volume – I Technical Specification for 66KV Outdoor CT
6.0
INSPECTION & TESTING
6.1.0
6.1.1
7.0
Test
Type test
6.1.2
Routine test
6.1.3
Acceptance test
6.2.0
Test on fitting and
accessories
6.3.0
Inspection and Testing
Test shall be carried out in accordance with IS-2705 / IEC185
a) Following type test shall be carried out on current
transformer- Short-time current test
- Temperature-rise test
- Lightning impulse test
- HV power frequency wet withstand voltage test on CT
- Determination of errors
b) Current transformer must be of type tested from
CPRI/ERDA and reports hall be submitted.
c) In case the product is never type tested earlier, seller has
to conduct the type tests from CPRI/ERDA at their own cost,
before commencement of supply.
Test shall be carried out in accordance with IS-2705 / IEC185
Test shall be carried out in accordance with IS-2705 / IEC185
As per manufacturer’s standard
a) The buyer reserves the right to witness all tests specified
on completed product
b) The buyer reserves the right to inspect the product at the
seller’s works at any time prior to dispatch, to verify
compliance with the specifications.
c) In-process and final inspection call intimation shall be
given, 10 days in advance to Purchaser.
DRAWINGS, DATA & MANUALS
7.1.0
To be submitted along with bid
The seller has to be submit :
a-1) Complete assembly, GA drawing
outdoor current transformer showing plan,
elevation and typical section view.
a-2) Typical connection diagram and winding
connection of current transformer.
a-3) Secondary box details
a-4) Structural drawing for CT mounting
arrangement
a-5) Rating plate diagram
a-6) Drawings of terminal connectors
b) Detailed reference list of customers
already using the offered product during
the last 5 years with similar design and
rating.
c) Completely filled GTP
d) Deviations from this specification. Only
deviations approved in writing before
award of contract shall be accepted.
e) Details of manufacturer’s quality
assurance standards and program and
ISO 9000 series or equivalent national
139
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for 66KV Outdoor CT
certification
Type test report shall be submitted for
the type, size & rating of product /
equipment offered along with bid. They
shall be considered valid for 5 years from
date of test performed on product /
equipment.
g) Complete product catalogue and manual
along with the bid.
h) Recommended spare parts and
consumable items for 5 years of
operation with prices and spare parts
catalogue with list for future
requirements.
a) Programme for production and testing
(A)
b) Guaranteed Techinal Particulars (A)
c) Calculations to substantiate choice of
electrical , mechanical component size /
ratings (A)
d-1) General arrangement drawing of
the current transformer (A)
d-2) Typical connection diagram and
winding connection of current
Transformer (A).
d-5) Terminal connector drawings (A)
d-7) General arrangement drawing
secondary terminal box (A)
e) Detailed installation and commissioning
instructions ( R)
f) Quality plan
a) Inspection and test reports, carried out
in manufacturer’s work (R )
b) Test certificates of all bought out items
c) Operation and maintenance instruction
as well as trouble shooting charts /
manuals.
Standard size paper A0, A1 , A2, A3, A4
As per Annexure A
f)
7.2.0
After award of contract, seller has
to submit mentioned drawings for
buyer’s Approval (A ) / Reference
(R)
7.3.0
Submittals
dispatch
7.4.0
7.5.0
Drawing and document sizes
No of drgs./Documents required at
different stages
8.0
required
prior
to
PACKING , SHIPPING, HANDLING AND STORAGE
8.0.0
8.1.1
Packing
Packing protection
8.1.2
Packing for accessories
and spares
Against corrosion , dampness, heavy rains, breakage and
vibration
Robust wooden non returnable packing case with all the
above protection and identification labels.
140
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Volume – I Technical Specification for 66KV Outdoor CT
8.1.3
Packing
label
8.1.4
Shipping
8.1.5
Handling and Storage
9.0.0
identification
In each packing case, following details are required :
a) Individual serial number
b) Purchaser’s name
c) PO number (along with SAP item code , if any) &
date
d) Equipment Tag no. (if any)
e) Destination
f) Manufacturer / Supplier’s name
g) Address of manufacturer’s / supplier’s its agent
h) Description and quantity
i) Country of origin
j) Month and year of manufacturing
k) Case measurements
l) Gross and net weight in kilograms
m) All necessary slinging and stacking instructions.
a) The bidder shall furnish the confirmation that the
proposed packages can be delivered safely upto
the site.
b) The seller shall be responsible for all transit
damage due to improper packing.
Manufacturer instruction shall be followed. Detail
handling & storage instruction sheet / manual need to be
furnished before commencement of supply.
PROGRESS REPORTING
9.1.0
Outline Document
9.2.0
Detailed Progress Report
To be submitted for purchase approval for
outline of production, inspection, testing,
inspection, packing, dispatch, documentation
programme.
To be submitted to purchaser once a month
containing
a)
b)
c)
d)
e)
Progress on material procurement
Progress on fabrication (As applicable)
Progress on assemble (As applicable)
Progress on internal stage inspection
Reason for any delay in total
programme
f) Details of test failures if any in
manufacturing stages
g) Progress on final box up constraints /
forward path
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Volume – I Technical Specification for 66KV Outdoor CT
10.0.0 DEVIATIONS
10.0.0
Deviation from the specification
Deviation from the specification shall be
started in writing with the tender by reference
to the specification clause/GTP/Drawing and
a description of the alternative offer. In
absence of such a statement. It will be
assumed by the Buyer that the seller
complies fully with this specification.
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Volume – I Technical Specification for 66KV Outdoor CT
Annexure – A
Scope of supply
1.0
The scope of supply shall include following
1.1
Design, manufacture, assembly, testing at manufacturer’s works before dispatch,
packing, delivery and submission of all documentation of outdoor current transformer.
1.2
Terminal connector.
1.3
Supervision of testing & commissioning of current transformer at site
1.4
BOQ as following –
Sr no.
Purchaser
Equipment Tag
No / SAP code
Equipment
Description
Location
Substation
name
Unit
Quantity
1
2
3
4
5
6
7
2.0
Submission of documents
Submission of drawing, calculations, manual , catalogues, test report shall be as
follows
Along with offer
Drawing
3 copies (Typical
drgs)
Calculations
3 copies
(Typical)
1 copy
Catalogues
Instruction
manual for the
transformer
Test Report
3.0
For Approval
after award of
contract
4 copies
Final after
approval
Remarks
6 copies + 1
soft copy in CD
4 copies
6 copies + 1
soft copy in CD
6 copies + 1
soft copy in CD
6 copies + 1
soft copy in CD
See clause 5.0
for various
drawing required
See clause 5.0
for details
1 copy
2 copy
6 copies + 1
soft copy in CD
Type test and
sample routine
test reports
Delivery schedule
3.1
Delivery period start date
-
from date of purchase order
3.2
Delivery period end date
-
as agreed with supplier
3.3
Material dispatch clearance
-
after inspection by purchaser and written
dispatch clearances for purchaser
143
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for 66KV Outdoor CT
Annexure – B
SERVICE CONDITIONS
1.0.0
a)
Mumbai Atmospheric conditions
Average grade atmosphere
b)
Maximum altitude above
level
Ambient Air temperature
Maximum
ambient
temperature
Relative Humidity
Thermal Resistivity of Soil
Seismic Zone
Rainfall
c)
d)
e)
f)
g)
h)
2.0.0
a)
b)
c)
d)
e)
f)
g)
h)
see
air
Heavy polluted , salt Laden, dusty, humid
with possibility of condensation
1000 M
Highest 45 deg C, Average 35 deg C
20 deg C
100 % Max
150 deg. C cm/W
3
3000 mm concentrated in four months
Delhi Atmospheric conditions
Average grade atmosphere
Maximum altitude above see
level
Ambient Air temperature
Maximum
ambient
air
temperature
Relative Humidity
Thermal Resistivity of Soil
Seismic Zone
Rainfall
144
Heavy polluted , dry
1000 M
Highest 50 deg C, Average 40 deg C
0 deg C
100 % Max
150 deg. C cm/W
4
750 mm concentrated in four months
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for 66KV Outdoor CT
Annexure – C1: Guaranteed Technical Particulars (33KV , 800-400/1/1/1/1A)
Description
Secondary Current
10.2
Purpose /Application
10.3
Rated output (project
specific)
30 VA
30 VA
10.4
Class of accuracy
0.2s
5P
10.5
10.6
Instrument security factor
Accuracy limit factor
≤5
10.7
Knee point voltage &
corresponding exciting
current (project specific)
10.9
10.10
11
11.1
11.2
12
13
14
14.1
14.2
14.3
Core4
1A
PS
PS
20
26.3 kA
145
≥
40 (RCT+8)
Magnetizing current at Vk/2
(project specific)
Resistance of the secondary
winding at 75 deg C
Secondary limiting voltage
Short time thermal rating of
primary
One Seconds
Three seconds
Rated dynamic current of
primary
Rated continuous thermal
current
Temp rise at an ambient of
50 deg C
Winding
Oil at the top
Exposed current carrying
parts
Core3
1A
Protection
(Spare)
10.1
10.8
1A
Core2
1A
Protection
(O/C & E/F)
Core-1
Metering
10.0
33 kV
36 kV
50 Hz
800 - 400 A
1A
Protection
(Bus Bar)
Name of Manufacturer
Address and contact details
Type
Rated Nominal Voltage
Highest System Voltage
Rated Frequency
Rated Primary Current
Rated Secondary current
Number of cores
Data By Supplier
≥
40 (RCT+8)
1
2
3
4
5
6
7
8
9
Data By Purchaser
≤30
mA
≤30
mA
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15
16
17
18
19
20
21
21.1
21.2
22
23
24
25
26
27
One minute power frequency
dry withstand voltage (KV
rms)
One minute power frequency
wet withstand voltage (KV
rms)
1.2/50 microsecond impulse
withstand test voltage KV
peak
Minimum creepage distance
in mm
Protective creepage distance
in mm
Magnetization curve of CT
core
Variations in ratio and phase
angle error due to variation in
Voltage by 1 Volt
Frequency by 1Hz
Current density in primary
winding
Weight of oil
Total weight
Mounting details
Overall dimensions
Terminal Connector
70 kV rms
70 kV rms
170 kVp
31 mm/kV
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Annexure – C2: Guaranteed Technical Particulars (33KV, 2000-1000/1/1/1/1A)
Description
10.2
Purpose /Application
10.3
Rated output (project
specific)
30 VA
30 VA
10.4
Class of accuracy
0.2s
5P
10.5
10.6
Instrument security factor
Accuracy limit factor
≤5
10.7
Knee point voltage &
corresponding exciting
current (project specific)
10.9
10.10
11
11.1
11.2
12
13
14
14.1
14.2
14.3
15
Magnetizing current at Vk/2
(project specific)
Resistance of the secondary
winding at 75 deg C
Secondary limiting voltage
Short time thermal rating of
primary
One Seconds
Three seconds
Rated dynamic current of
primary
Rated continuous thermal
current
Temp rise at an ambient of
50 deg C
Winding
Oil at the top
Exposed current carrying
parts
One minute power frequency
dry withstand voltage (KV
Protection
(Spare)
Secondary Current
Core4
1A
PS
PS
≥ 40
(RCT+8)
Core
-3
1A
10.1
10.8
1A
Core2
1A
Protection
(O/C & E/F)
Core-1
Metering
10.0
33kV
36 kV
50 Hz
2000-1000 A
1A
Protection
(Bus Bar)
Name of Manufacturer
Address and contact details
Type
Rated Nominal Voltage
Highest System Voltage
Rated Frequency
Rated Primary Current
Rated Secondary current
Number of cores
Data By Supplier
≥ 40
(RCT+8)
1
2
3
4
5
6
7
8
9
Data By Purchaser
≤30
mA
≤30
mA
20
26.3kA
70 kV rms
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rms)
16
17
18
19
20
21
21.1
21.2
22
23
24
25
26
27
One minute power frequency
wet withstand voltage (KV
rms)
1.2/50 microsecond impulse
withstand test voltage KV
peak
Minimum creepage distance
in mm
Protective creepage distance
in mm
Magnetization curve of CT
core
Variations in ratio and phase
angle error due to variation in
Voltage by 1 Volt
Frequency by 1Hz
Current density in primary
winding
Weight of oil
Total weight
Mounting details
Overall dimensions
Terminal Connector
70 kV rms
170 kVp
31 mm/kV
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Annexure – D1 : Guaranteed Technical Particulars (66KV , 400-200/1/1/1/1A)
Description
10.2
Purpose /Application
10.3
Rated output (project
specific)
30 VA
30 VA
10.4
Class of accuracy
0.2s
5P
10.5
10.6
Instrument security factor
Accuracy limit factor
≤5
10.7
Knee point voltage &
corresponding exciting
current (project specific)
10.9
10.10
11
11.1
11.2
12
13
14
14.1
14.2
14.3
15
Magnetizing current at Vk/2
(project specific)
Resistance of the secondary
winding at 75 deg C
Secondary limiting voltage
Short time thermal rating of
primary
One Seconds
Three seconds
Rated dynamic current of
primary
Rated continuous thermal
current
Temp rise at an ambient of
50 deg C
Winding
Oil at the top
Exposed current carrying
parts
One minute power frequency
dry withstand voltage (KV
rms)
Protection
(Spare)
Secondary Current
Core4
1A
PS
PS
≥ 40
(RCT+8)
Core
-3
1A
10.1
10.8
1A
Core2
1A
Protection
(O/C & E/F)
Core-1
Metering
10.0
66kV
72.5 kV
50 Hz
400-200 A
1A
Protection
(Bus Bar)
Name of Manufacturer
Address and contact details
Type
Rated Nominal Voltage
Highest System Voltage
Rated Frequency
Rated Primary Current
Rated Secondary current
Number of cores
Data By Supplier
≥ 40
(RCT+8)
1
2
3
4
5
6
7
8
9
Data By Purchaser
≤30
mA
≤30
mA
20
31.5kA
140 kV rms
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16
17
18
19
20
21
21.1
21.2
22
23
24
25
26
27
One minute power frequency
wet withstand voltage (KV
rms)
1.2/50 microsecond impulse
withstand test voltage KV
peak
Minimum creepage distance
in mm
Protective creepage distance
in mm
Magnetization curve of CT
core
Variations in ratio and phase
angle error due to variation in
Voltage by 1 Volt
Frequency by 1Hz
Current density in primary
winding
Weight of oil
Total weight
Mounting details
Overall dimensions
Terminal Connector
140 kV rms
325 kVp
31 mm/kV
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Volume – I Technical Specification for 66KV Outdoor CT
Annexure – D2: Guaranteed Technical Particulars (66KV, 800-400/1/1/1/1A)
Description
10.2
Purpose /Application
10.3
Rated output (project
specific)
30 VA
30 VA
10.4
Class of accuracy
0.2s
5P
10.5
10.6
Instrument security factor
Accuracy limit factor
≤5
10.7
Knee point voltage &
corresponding exciting
current (project specific)
10.9
10.10
11
11.1
11.2
12
13
14
14.1
14.2
14.3
15
Magnetizing current at Vk/2
(project specific)
Resistance of the secondary
winding at 75 deg C
Secondary limiting voltage
Short time thermal rating of
primary
One Seconds
Three seconds
Rated dynamic current of
primary
Rated continuous thermal
current
Temp rise at an ambient of
50 deg C
Winding
Oil at the top
Exposed current carrying
parts
One minute power frequency
dry withstand voltage (KV
rms)
Protection
(Spare)
Secondary Current
Core4
1A
PS
PS
≥ 40
(RCT+8)
Core
-3
1A
10.1
10.8
1A
Core2
1A
Protection
(O/C & E/F)
Core-1
Metering
10.0
66kV
72.5 kV
50 Hz
800-400 A
1A
Protection
(Bus Bar)
Name of Manufacturer
Address and contact details
Type
Rated Nominal Voltage
Highest System Voltage
Rated Frequency
Rated Primary Current
Rated Secondary current
Number of cores
Data By Supplier
≥ 40
(RCT+8)
1
2
3
4
5
6
7
8
9
Data By Purchaser
≤30
mA
≤30
mA
20
31.5kA
140 kV rms
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16
17
18
19
20
21
21.1
21.2
22
23
24
25
26
27
One minute power frequency
wet withstand voltage (KV
rms)
1.2/50 microsecond impulse
withstand test voltage KV
peak
Minimum creepage distance
in mm
Protective creepage distance
in mm
Magnetization curve of CT
core
Variations in ratio and phase
angle error due to variation in
Voltage by 1 Volt
Frequency by 1Hz
Current density in primary
winding
Weight of oil
Total weight
Mounting details
Overall dimensions
Terminal Connector
140 kV rms
325 kVp
31 mm/kV
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Volume – I Technical Specification for 66KV Outdoor CT
Annexure – D3: Guaranteed Technical Particulars (66KV, 1600-800/1/1/1/1A)
Description
Secondary Current
10.2
Purpose /Application
10.3
Rated output (project
specific)
30 VA
30 VA
10.4
Class of accuracy
0.2s
5P
10.5
10.6
Instrument security factor
Accuracy limit factor
≤5
10.7
Knee point voltage &
corresponding exciting
current (project specific)
10.9
10.10
11
11.1
11.2
12
13
14
14.1
14.2
14.3
15
Magnetizing current at
Vk/2 (project specific)
Resistance of the
secondary winding at 75
deg C
Secondary limiting
voltage
Short time thermal rating
of primary
One Seconds
Three seconds
Rated dynamic current of
primary
Rated continuous
thermal current
Temp rise at an ambient
of 50 deg C
Winding
Oil at the top
Exposed current carrying
parts
One minute power
frequency dry withstand
Core4
1A
Protection
(Spare)
Core
-3
1A
10.1
10.8
1A
Core2
1A
Protection
(O/C & E/F)
Core-1
Metering
10.0
66 kV
72.5 kV
50 Hz
1600-800 A
1A
PS
PS
≥ 40
(RCT+8)
3
4
5
6
7
8
9
Protection
(Bus Bar)
2
Name of Manufacturer
Address and contact
details
Type
Rated Nominal Voltage
Highest System Voltage
Rated Frequency
Rated Primary Current
Rated Secondary current
Number of cores
Data By Supplier
≥ 40
(RCT+8)
1
Data By Purchaser
≤30
mA
≤30
mA
20
31.5 kA
140 kV rms
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voltage (KV rms)
16
17
18
19
20
21
21.1
21.2
22
23
24
25
26
27
One minute power
frequency wet withstand
voltage (KV rms)
1.2/50 microsecond
impulse withstand test
voltage KV peak
Minimum creepage
distance in mm
Protective creepage
distance in mm
Magnetization curve of
CT core
Variations in ratio and
phase angle error due to
variation in
Voltage by 1 Volt
Frequency by 1Hz
Current density in
primary winding
Weight of oil
Total weight
Mounting details
Overall dimensions
Terminal Connector
140 kV rms
325 kVp
31 mm/kV
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Volume – I Technical Specification for 66KV Outdoor CT
Annexure –D Recommended spares (Data by Supplier)
List of recommended spares as following –
Sr. No.
1
2
3
4
5
6
Description of spare part
Unit
155
Quality
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TECHNICAL SPECIFICATION
FOR
11KV CAPACITOR BANK
Specification no – SP-CPLN-02-R3
Prepared by
Hemanshi Kaul
Approved by
Kiran Kumar Alla
Rev: 3
Date: 31.07.2014
156
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Volume – I Technical Specification for 11KV Capacitor Bank
Revision Record
Rev.
No.
Item / Clause
No:
Nature of Change
Approved
by
R3
Cl.1.0.0
IS 9921 - added
KA
R3
Cl.3.12
Plinth for mounting - RCC instead PCC slab
KA
R3
Cl.3.14
IP class changed from 21 to 22
KA
R3
Cl.3.18
Enclosure top cover thickness increased from
2mm to 2.5mm
KA
R3
Cl.21
Measuring class 0.5 introduced in NCT
KA
R3
Cl.21.6
NCT mounting changed from PCC to RCC
KA
R3
Cl.3.22
External hardware for enclosure changed from
HDG to SS
KA
R3
Cl.3.31
Isolator Details with rating added
KA
R3
Cl.4.7
Capacitor unit enclosure thickness increased
from 1.5 to 2mm
KA
R3
Cl.6.4
Make of Isolator added
KA
R3
Cl.6.5
Make of LA added
KA
R3
Annexure B
BOQ
KA
R3
Annexure A
Cl.26
Lightning Arrester details added
KA
R3
Annexure A
Cl.27
Isolator details added
KA
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Volume – I Technical Specification for 11KV Capacitor Bank
1.0 CODES & STANDARDS:
Material, equipment and methods used in the manufacture of capacitor banks shall conform to the
latest edition of following standards: Standard Name / No
Standard’s Description
Indian Electricity Act 2003
CBIP manual
IS 13925 part 1,2 & 3
Shunt capacitors above rated voltage 1000v
IS 11298 part 3
Plastic films for capacitors
IS 5553
Series reactor
IS 2099
Bushings for voltages above 1000V
IS 12672
Internal fuses & disconnector for shunt capacitors
IS 2705
IS 13067
Current transformers
Impregnant for power capacitors
IS5
Color of mixed paints
IS 15086, IS 3070 (Pt 3)
Surge arrestor
IS 2629
Recommended practice for Hot dip galvanizing of Iron and steel
IS 4759
Hot- dip Zinc coating on structural steel and other allied products
IS 9921
Specification for Alternating Current Disconnectors (Isolators) and
Earthing Switches for voltages above 1000V
Shunt capacitors
IEC 60871
In the event of direct conflict between various order documents, the precedence of authority of
documents shall be as follows –
i.
Guaranteed Technical Particulars (GTP)
ii.
Specification including applicable codes, standards
iii.
Approved Vendor Drawings
iv.
Other documents
2.0 Purchaser electrical System data
2.1
HT Supply system
3 phase AC, 3wire
2.2
Rated Voltage
11Kv +/-10%
2.3
Rated frequency
50Hz+/-5%
2.4
Fault level
500 MVA at 11kV
3.0 HT CAPACITOR THREE PHASE BANK ASSEMBLY:
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The equipment shall have all the following features –
3.1
HT Capacitor Scheme
As per annexure E
3.2
Service location
Suitable for outdoor use
3.3
Connection
Double star with solid connection between two neutral points
3.4
Neutral current
transformer (NCT)
HT capacitor bank
mounting
Placed between two star neutral points
3.6
Single phase HTcapacitor
unit connections
Connected externally by sleeved flexible copper connectors to
form double star with single phase capacitors in series or
parallel group per phase, maximum two tier arrangement.
3.7
Sleeves on tinned copper
conductor
11Kv heat shrinkable with red, yellow, blue, & black color for
phase identification.
3.8
Capacitor connecting
accessories for future
expansion
Interchangeability
between various single
phase capacitor units
Capacity addition in
future
Shall be supplied along with the bank delivery and shall be
separately packed and identified in BOM
3.5
3.9
3.10
Individual single phase capacitor units mounted on steel stand /
rack
Without disturbing other units
3.11
HT capacitor bank mesh
enclosure
3.12
Enclosure mounting
By addition of single phase capacitor units in each phase to
double the overall capacity.
Steel stand / rack to have vacant slots or space for addition
For enclosing HT capacitor stand along with capacitor units,
Reactors, flexible copper connectors, NCT & terminal bus bar.
The enclosures shall be provided with solenoid type switch with
timer.
Free standing on RCC plinth / slab
3.13
Enclosure construction
Framed steel construction
3.14
Degree of enclosure
protection
IP22 Minimum
3.15
Enclosure side walls
3.16
Enclosure stiffeners for
side wall
Enclosure doors of width
1500mm
Made of wire mesh opening of size 12mmx12mm with steel wire
of diameter 2.5mm minimum Side wall wire mesh frame shall be
bolted to main frame structure with Allen head type screw/bolts
Horizontal & vertical steel angle stiffeners at maximum spacing
of 1000mm
Hinged, center opening, double leaf type, three doors provided
on adjacent side walls with bolting as well as padlock facility.
Wire mesh enclosure provided shall be suitable for taking the
capacitor units for maintenance by opening doors i.e. without
3.17
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Volume – I Technical Specification for 11KV Capacitor Bank
removing any of the frame parts.
3.18
Enclosure top cover
3.19
Earth connection of
enclosure
3.20
3.20.1
Bus bar for HV cable
termination
Bus bar material
3.20.2
Bus Bar
3.21
3.21.1
Neutral current
transformer
Voltage class
3.21.2
Ratio
10/1/1
3.21.3
Accuracy class
0.5 , 5P10
3.21.4
Burden
10 , 15VA
3.21.5
Material
Epoxy Cast resin
3.21.6
Mounting
3.21.7
NCT terminals
On RCC slab/plinth/Steel Structure, near capacitor unit steel
stand
Marked on NCT enclosure
3.21.8
NCT primary terminals
Brought out of NCT enclosure through insulator bushing of
voltage class equal to rated capacitor voltage
3.21.9
NCT secondary terminal
Brought out in a terminal box mounted on NCT enclosure
3.21.10
Terminal box-degree of
ingress protection and
cable entry
External hardware for HT
capacitor bank enclosure
(nuts/bolts/handles)
IP55 minimum with cable entry for 6Cx2.5 sq mm YWY 1100volt
grade cable
Series Reactor
Shall be provided fulfilling following requirements,
1. Parallel switching of one bank with another two bank in
services.
2. Suitable design calculation shall be submitted at the time of
drawing approval.
3.22
3.23
CRCA sheet metal of 2.5mm thickness, bolted to main steel
frame, sloping roof on two sides from center with steel angle
stiffeners.
All wire mesh side walls, doors & top cover shall be connected
to each other by metallic jumper links, two earth studs with hole
size for M10 bolt to be provided on enclosure frame bottom. All
columns of enclosures are to be connected to ground earth mat
by risers of suitable size (or as specified separately). The
earthing connections to be given using bolts of size mentioned
above.
One for each phase mounted on porcelain or epoxy insulators
Tinned copper, sized for 150% of rated current and rated fault
duty
Suitable for outdoor termination of HT cable size up to 2R x
3Cx300sqmm for each phase
For outdoor application, hermetically sealed
Suitable for system rated voltage
Stainless Steel
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3.24
3.25
3.26
3.27
3.28
Series reactor continuous
Rating
Series reactor rated
voltage
Series reactor single
phase unit connection
Series reactor type
3.31
Series reactor power
frequency withstand
voltage
Series reactor lightening
impulse withstand voltage
Series reactor short time
withstand current rating
for 3 seconds
Isolator
3.32
Surge arrestor
3.33
Capacitor terminal
bushings
3.29
3.30
3. Reactors shall be suitably designed to limit overloading due
to presence of harmonics in the system as per
recommendations of IS: 13925.
4. The series reactor shall be designed to suit the final
capacity of capacitor bank
5. The manufacturer shall submit the G.A. Drawings for
Capacitor Bank with mounting of series reactor inside the
bank.
0.2% of capacitor bank rating
Same as capacitor bank rated voltage
Connected between single phase capacitor units and neutral
star point
Dry type with air natural cooling
28kV
75kV
16 times capacitor rated current at 130% rated voltage
Each sub bank shall be provided with Motorized 11KV Isolator of
1250Amp i.e. each of 3.6 MVAR bank shall have one (01) No
isolator each. A complete 7.2 MVAR bank shall have Two (02)
No’s Isolator.
For details refer outdoor isolator specifications.
Type : Station Class Gapless Metal Oxide, Class 3
System Voltage : 11 kV
Rated Voltage : 9 kV rms
Nominal discharge current : 10kA
Suitable for capacitor rated voltage with creepage distance
31kV/mm minimum.
4.0 CAPACITOR SINGLE PHASE UNIT :
The equipment shall have all the following features –
Totally enclosed, leak proof, dust proof suitable for
Capacitor single phase unit
outdoor application, comprising individual capacitor
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4.1
4.2
Capacitor element
4.3
Conducting layer material
elements connected in series & parallel groups.
Continuous operating current shall be minimum 1.43 times
to max. 1.65 times as per clause 6.2 of IS 13925.
Developed from alternate layers of conducting metal foil &
dielectric film
Aluminum foil
4.4
Dielectric material
Hazy Poly Propylene (APP), Imported film
Double layer minimum
4.5
Cooling method
Natural air
4.6
Imp regnant Oil
4.7
Capacitor unit enclosure
4.8
Discharge device
Non PCB(Poly chlorinated Biphenyl), low toxic, with low
bio-accumulation and biodegradable liquid filled under
vacuum
Fabricated from sheet metal CRCA steel of thickness
2mm minimum, hermetically sealed & hydraulically tested
For each single phase capacitor unit
4.9
Internal fuse
Metal alloy fuse of suitable rating as per IS 12672 for each
capacitor element
Residue of fuse after operation shall not contaminate the
impregnating liquid. The fuse shall not deteriorate when
subjected to inrush current. The fuse assembly shall be
distinct and separate from the element packs such that it
shall isolate only the faulty element packs and the
operation of a fuse under worst condition does not affect
the other healthy elements.
5.0 PERFORMANCE
The equipment shall have all the following features –
5.1
Over voltage operation
as per IS 13925 part1
5.2
Over current operation
As per IS 13925 part1
5.3
Operating temperature category
+5/C as per IS 13925 part1
5.4
Discharge characteristic as per IS
13925 part1
5.5
Power loss and tangent of Loss
angle (tan δ)
Capacitor bank residual voltage after disconnection from
mains supply shall be maximum 50volts within 10 minutes
Each capacitor single phase unit residual voltage after
disconnection from mains supply shall be maximum
50volts within 10 minutes
To be specified by manufacturer as per IS 13925 part1
6.0 Approved Makes of component
6.1
6.2
Capacitor unit
Series Reactor
Epcos, Shreem Electrical Ltd, ABB Ltd, L&T(Meher),
Unistar,Power Cap.
Epcos, Quality power and Shrihans
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6.3
NCT
Gyro & Pragati Electrical
6.4
Isolator
6.5
LA
G.K.Electrical, Electrolite, Rama Engineering works &
ABB Ltd
Oblum & Lamco industries Ltd
7.0 LABLES & FINISH
The equipment shall have all the following features –
7.1
Rating plate for HT Capacitor
bank
7.2
Material
Anodized Aluminum 16SWG
7.3
Background
SATIN SILVER
7.4
Letters, diagram & border
Black
7.5
Process
etching
7.6
Bank Name plate details
7.7
Rating plate for each single phase
capacitor unit
Unit Name plate details
Mfg name, Mfg Sr. No., Month & year of Mfg, equipment
type, total output rating, Bank Capacitance in µF, Bank
watt losses, Owner name & order number, Temp.,
category, connection diagram, Guarantee period.
Anodized Aluminum with white character on black
background and details as per clause no 10.1 of IS 13925
Mfg name, Mfg Sr. No., Month & year of Mfg, equipment
type, total output rating, unit Capacitance in µF, unit watt
losses, Temp. category, Discharge device rating,
connection diagram, Owner name & order number,
Guarantee period, unit wt. in kG,
Anodized Aluminum with white letters engraved on red
background
Capacitors and wire mesh enclosure
7.7.1
7.8
7.9.1
Danger plate on front & rear side
of wired mesh enclosure
Painting - Capacitor single phase
unit
Surface preparation
7.9.2
External finish
7.10
Painting– Wire-mesh, frame
enclosure
7.9
Shot blasting or chemical 7 tank process
Powder coated pure-polyester base Mat finish, shade–
Siemens Gray RAL 7032, uniform thickness 80 µ
minimum
1) chemical 7 tank process for surface, 2) Hot dipped
Galvanized with uniform thickness 65 µ minimum as per
IS 2629 and 4759.
8.0 INSPECTION & TESTING
8.1
Type test
8.2
Routine test
Equipment of type tested quality only, type test certificate
to be submitted along with offer. Endurance Test as per
IS:13925 shall be included in the list of type test.
As per relevant Indian standard
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Volume – I Technical Specification for 11KV Capacitor Bank
8.3
9.0
9.1
Acceptance test as per IS
1. To be performed in presence of Owner at
manufacturer works, as per relevant Indian standard
along with BOM.
2. Before taking up the complete ordered quantity for
manufacturing, a Proto Type shall be offered for
approval.
SHIPPING, HANDLING AND SITE SUPPORT
Packing
9.2
Packing identification label
9.3
Accessories and tools
Wooden case or box with protection against rain,
dampness, vibration.
To show purchaser name, address, purchase order
number, equipment name, quantity.
Packed in separate wooden case or box
10.0 DEVIATIONS
Deviation from this specification, if any, shall be clearly brought out in the offer. Unless owner explicitly
accepts such deviations, it shall be considered that the offer fully complies with the specification.
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Volume – I Technical Specification for 11KV Capacitor Bank
ANNEXURE – A
TYPICAL SCHEME OF HT CAPACITOR 3 PHASE BANK
a) The HT capacitor 3 phase bank consists of single phase capacitor unit (shown by letter ‘C’)
connected in star, neutral current transformer, connecting hardware & overall wire mesh enclosure
b) The capacitor units for future expansion are represented by dashed line
c) The capacitor units shall be connected to form double star connection with NCT between two
neutral points
d) One spare single phase capacitor unit C shall be provided for each HT capacitor bank
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Volume – I Technical Specification for 11KV Capacitor Bank
ANNEXURE B:- BOQ
Capacitor Bank shall comprise the following main items
S.No Capacitor Bank Type Quantity Sub Bank Rating Rating 1 2 7.2 MVAR 3.6 MVAR Annexure –C
Type 1 Type 2 Isolator LA NCT Series Reactor 3.6 MVAR 01 No 01 No 01 No 06 Nos 3.6 MVAR 01 No 01 No 01 No 06 Nos 01 No 01 No 01 No 06 Nos 2 Nos 2 Nos Guranteed Technical Particulars ( Data by Supplier )
166
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Volume – I Technical Specification for 11KV Capacitor Bank
Sr. No.
1
2
Description
Data to be filled by Manufacturer
Manufacturer equipment type/make
Conformance to design standards as per
specification Yes/No
- Capacitor Unit
- Series Reactor
- LA
- Isolator
- NCT
3
4
5
6
7
Conformance to capacitor design
requirements as per specification clause no.
3.0 to 7.0 - Yes/No
Submission of deviation sheet for each
specification clause no. -Yes/No
APP type capacitors offered?
Capacitor bank arrangement / scheme
conforming to specification?
Capacitor bank ( 3 phase system)
7.1
Capacitor bank ( Rated capacitance at 50Hz)
7.2
Capacitor bank rated voltage – 12Kv
7.3
Capacitor bank KVAR at 11kV
7.4
Capacitor bank KVAR at 12kV
Capacitor bank line current at rated voltage,
continuous operation
Designed short circuit withstand capacity for
3sec
Capacitor bank insulation level at 50Hz
7.5
7.6
7.7.1
7.7.2
8
Capacitor bank impulse voltage withstand
One spare single phase capacitor unit
offered?
Capacitor single phase unit
8.1
Capacitor single unit capacitance at 50Hz
8.2
Capacitor single unit rated operating voltage
8.3
Capacitor KVAR ( at rated voltage )
8.4
Capacitor KVAR (at110% of rated voltage)
Capacitor single unit continuous operating
rated current
Designed short circuit withstand capacity of
single capacitor unit for 3sec
Capacitor unit temperature category
( required +5/ C)
Single capacitor unit construction
7.8
8.5
8.6
8.7
9
9.1
Enclosure sheet metal CRCA
9.2
Enclosure sheet metal thickness in mm
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Volume – I Technical Specification for 11KV Capacitor Bank
9.3
Hermetic sealing method (pressure
welding/gas welding/sealant/ if any other pl.
specify)
9.4
Dimensions of a single capacitor unit
Height
Length
Width
9.5
Weight of a single capacitor unit
9.6
Single capacitor unit bushings
Type of insulator
Creepage distance
Clearance between two terminals
9.7
No. of series group/unit
9.8
No. of parallel elements/ series group
9.9
No. of APP layers -double/triple
9.10
Thickness of APP film
9.11
Width of APP film
9.12
Thickness of Al foil
9.13
Width of Al foil
9.14
Active width of Al foil
9.15
Maximum voltage stress per APP layer
9.16
Element connection method
9.17
14.1
Discharge device
Capacitor bank maximum permissible over
voltage
Capacitor power loss at rated voltage
Capacitor tan delta ( Tangent of power loss
angle) at maximum operating conditions
Guaranteed temperature rise of capacitor
above ambient temperature
Type of discharge device – internal resistor
14.2
Discharge device material
14.3
Value of discharge device
Discharge time required to attain residual
voltage equal to 50 volts
Capacitor bank overall dimensions
10
11
12
13
14.4
15
Height x Length x Width
16
Capacitor bank total weight
17
Capacitor bank clearances
i)Phase to Phase
ii)Phase to neutral
iii)Phase to earth
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Volume – I Technical Specification for 11KV Capacitor Bank
18
19
20
21
Tinned copper Bus bar cross-section in sq.
mm
Tinned copper Bus bar continuous rating
Bus bar short time withstand capacity in kA
for 3sec
Flexible tinned copper connector rating
22.1
Bus bar support insulator make & type
22.2
Bus bar support insulator voltage class
Bus bar provided with insulating sleeve and
phase barriers?
Neutral Current transformer
23
24
24.1
Neutral current transformer make
24.2
Neutral current transformer outdoor type
24.3
Cast resin type NCT offered?
24.4
Neutral current transformer ratio
Neutral current transformer accuracy class
(0.5 & 5P10min)
Neutral current transformer rating
( 10 & 15VA)
Neutral current transformer terminal box
ingress protection (IP55min)
Series Reactor
24.5
24.6
24.7
25
25.1
Series reactor make
25.2
Continuous current rating of series reactor
25.3
Series reactor kVAr rating per phase per star
25.4
Series reactor rated voltage
25.5
Type –dry air cooled
Short time withstand current capacity for 3sec
( min 16 times capacitor rated current at
130% rated voltage )
Series reactor single phase unit connected
between single phase capacitor units and
neural star pint
Series reactor power frequency withstand
voltage 28Kv MIN
Series reactor lightening impulse withstand
voltage 75kv min
25.6
25.7
25.8
25.9
26
26.1
Lightning Arrestor
Name of manufacturer
26.2
Type – Gapless ZnO
26.3
Rating
26.4
Rated voltage
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Volume – I Technical Specification for 11KV Capacitor Bank
26.5
Nominal Discharge Current
26.6
Class - III
26.7
Insulation withstand voltage
26.8
Crrepage distance
27
27.1
Isolator
Name of manufacturer
27.2
Isolator ratings
27.3
Type of operation
27.4
Type
27.5
Operating mechanism
27.6
Voltage rating
27.7
Rated current
27.8
No.of poles
27.9
Rated short time current
27.10
Type of mounting
27.11
Construction
27.12
Earth switch provided
27.13
Auxiliary contacts provided
27.14
Electrical interlocks
27.15
Mechanical interlocks
27.16
Creepage distance
Insulation level - Power frequency withstand
Voltage
- Impulse withstand voltage
Terminal arrangement
a) Incoming suitable for
27.17
27.18
27.19
b) Outgoing suitable for
Overload capacity
27.20
Control voltage
28
Name plate and labels as per specification?
29
Painting of capacitor and mesh enclosure
29.1
Shade RAL 7032
29.2
Material – Pure polyester grade A
29.3
Minimum thickness ( 80 microns )
Power cable terminal suitable for
3CX300Sqmm XLPE HT
Space provided for future capacity
30
31
32
18.0
19.0
Copy of type test certificate submitted
Conformance to label & finish as per
specification clause no. 7 -Yes/No
Copy of type test certificate submitted? Yes/No
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Volume – I Technical Specification for 11KV Capacitor Bank
Seal of Company
Bidders Name
: ____________________
Signature
: ____________________
Name
: ____________________
Designation
: ____________________
Date
: ____________________
171
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TECHNICAL SPECIFICATION
FOR
LIGHTNING ARRESTERS
Prepared by
Hemanshi
Reviewed by
Kiran Kumar Alla
Approved by
Kiran Kumar Alla
Rev: 0
Date: 2.11.2013
172
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Volume – I Technical Specification for Lightning Arrestor
1.0
CODES & STANDARDS:
Materials, equipment and methods used in the manufacturing of Lightning Arresters shall
confirm the latest edition of following standard: National Standard
Standard Code
Standard Description
Indian Electricity Rules (relevant safety regulation of CEA)
Indian Electricity Act 2003
CBIP manual
Lightning Arresters for Alternating Current Systems
Method of high voltage testing
Recommended practice for Hot-Dip Galvanizing of Iron
and Steel
Hollow insulators for use in electrical equipment
Specification for Hexagon bolts for Steel structures
IS: 3070 Part-3
IS : 2071 - Part I
IS : 2629 -1985
IS : 5621 – 1980
IS : 6639 - 1972
International Standard
Standard Code
IEC 60099-4-2001
2.0
Standard Description
Metal-Oxide surge arresters without gaps for AC system
DESIGN FEATURES
S No
Description
2.1
Application
2.2
Type of Lightning Arrester
2.3
Pressure relief device
2.4
Accessories
2.5
Mounting
2.6
Line-side Terminal Connectors
2.7
2.8
Ground Terminal Connectors
Surge Counter
Requirement / Rating
To be used for protection of transformers,
circuit breakers and other sub-station
equipment against lightning and switching
surges.
Gap-less metal oxide type (ZnO type)
Pressure relief device of class 40 KA shall be
provided
Clamps and counter
LA mounting vertically on steel structures with
insulating bases. Surge counters in weather
proof enclosures suitable for mounting on
structure of lighting arrester
Suitable for ACSR Zebra/ Goat conductor /
Pipe Bus
Suitable for 50x6 mm GS flat
Non – resettable type
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Volume – I Technical Specification for Lightning Arrestor
2.9
Name Plate Marking
Following minimum information must be
marked –
i) Name of the manufacturer
ii) Type and serial No.
iii) Model No.
iv) Rated voltage
v) Max. continuous Operating Voltage
vi) Nominal discharge current
vii) Pr. Relief Current
viii) Identification mark on each separately
housed unit to enable it to be replaced in
correct position after the multiunit arrester
has been dismantled.
3.0
3.1
4.0
Approved make of Components
Insulators
Testing & Inspection
JS / WSI / BHEL / Modern / Saravana
4.1
Internal Test
4.2
Type test
4.3
4.4
4.5
Routine test
Acceptance test
Test Witness
4.6
3.0
Manufacturer shall carry out comprehensive
inspection and testing during manufacturing of
the equipment.
The product must be of type tested quality.
Type test reports shall be submitted for the
type, size & rating of equipment offered along
with bid. If the manufacturer’s lab is accredited
by Govt./ authorized body then it shall be
acceptable for type testing
As per relevant IS / IEC
as per relevant IS / IEC
The buyer reserves the right to witness all tests
specified on completed product
The buyer reserve the right to inspect the
product at the sellers works at any time prior to
dispatch, to verify compliance with the
specifications.
In-progress and final inspection call intimation
shall be given in advance to Owner.
As per manufacturer’s standard and relevant IS
/ IEC
Tests on Fitting and Accessories
DEVIATIONS
Deviation from this specification, if any, shall be clearly brought out in the offer. Unless owner
explicitly accepts such deviations, it shall be considered that the offer fully complies with the
specification.
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TECHNICAL SPECIFICATION
FOR
OUTDOOR
DISCONNECTING SWITCH
Prepared by
Supriya Raina
Rev: 0
Reviewed by
Meenakshi
Date:
Approved by
Kiran Kumar Alla
175
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Volume – I Technical Specification for Disconnecting Switch
1.0
CODES & STANDARDS:
Materials, equipment and methods used in the manufacture of outdoor disconnecting switch
shall confirm to the latest edition of following standard: National Standard
Standard Code
Standard Description
Indian Electricity Rules (relevant safety regulation of CEA)
Indian Electricity Act 2003
CBIP manual
IS : 9921 - Part I to V
IS : 0996 -1979
IS : 7572 -1974
IS : 4237 -1967
IS : 2147 -1962
IS : 2544
IS : 2629 -1985
IS : 6639 - 1972
2.0
Specification for Alternating Current Disconnectors
(Isolators) and Earthing Switches
Single phase small AC and Universal Electric Motors.
Guide for testing single phase AC and Universal motors.
General Requirement for switchgear for voltage not
exceeding 1.1 kV.
Degree of protection provided by enclosure for low-voltage
switchgear control gear
Porcelain Post Insulator
Recommended Practice for Hot-Dip Galvanizing of Iron
and Steel
Specification for Hexagon Bolts for Steel Structures
DESIGN FEATURES
S No
Description
2.1.0
Disconnect Switch Type
& Mechanism
2.1.1
Motor assembly
2.2.0
Earth Switch Mechanism
Disconnector Switch
Controls
Remote electrical control
Local Manual control
Local electrical control
Interlock with circuit
breakers
Interlock with Earth
Switch
2.3.0
2.3.1
2.3.2
2.3.3
2.4.0
2.5.0
2.6.0
Padlock for Earth Switch
2.7.0
2.7.1
Fixed Contacts
Type of contacts
Requirement / Rating
Motor operated, central rotating double break with turn
and twist mechanism, triple pole, outdoor type for
installation and operation in horizontal plane with or
without earth switches, as required complete in all
respects.
Suitable for 3 phase 415V, 50 Hz. Provided with a quick
electro-mechanical brake on high speed shaft for rapid
braking.
Manually operated
Required
Required
Required from integral Local Control Cabinet
Electrical interlock suitable for 220 V DC
Mechanical & Electrical interlock
Padlock & keys for both positions i.e. when earth switch
is grounded and when earth switch is un-grounded.
Spring loaded with smooth surface, silver plated
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Volume – I Technical Specification for Disconnecting Switch
2.7.2
Current carrying castings
2.7.3
Current carrying Springs
2.8.0
Insulators
2.8.1
Construction
2.8.2
Fasteners
2.9.0
2.9.1
Moving Contacts
Type of contacts
2.9.2
Wiping Action
2.10.0
Current carrying Springs
2.11.0
Fault Current rating
2.12.0
Disconnecting Switch
contacts movement
2.13.0
Corona Effect
2.14.0
Control cabinet
2.14.1
Enclosure
2.14.2
Cabinet Door
2.14.3
Wiring
2.14.4
Locking arrangement
2.14.5
Incomer
2.14.6
Outgoing Control Wiring
2.14.7
Aux. Contacts
2.14.8
Terminals
2.14.9
Paint Shade
Non corrodible, non ferrous material
Made of non aging, non magnetic stainless steel with life
long spring action strength
Comprising of cylindrical solid core post insulators. The
porcelain used in the insulators shall be homogeneous,
free from laminations, cavities or any other defect which
may affect its mechanical and dielectric qualities and
shall be thoroughly vitrified, tough and impervious to
moisture. The glazing of the porcelain shall be of
uniform brown colour, free from blisters, burrs and other
defects.
All metal caps, jointing flanges, bolts and nuts shall be
made of high grade cast iron or malleable steel casting,
machine faced and hot-dip galvanized.
High pressure relieving copper contacts, silver plated
Required during opening & closing. Shall be adequate to
remove any oxide film formed without causing scouring
or abrasion on the contact surfaces.
Made of non aging, non magnetic stainless steel with life
long spring action strength
Earth switch shall be able to carry same Fault Current
as assigned to the disconnecting switch.
90 deg from full open to full close in order to ensure a
distinct break ands clear visibility.
Shall be free from visible corona discharge in both open
& close positions at visible discharge test voltages.
Weather-proof, water-shedding, corrosion-proof IP-55
steel cabinet
Neoprene Gasketed, hinged access door shall have a
mechanical indicator fitted to clearly indicate fully
opened and fully closed positions of the disconnection
switch.
Control wiring shall be done using 1.1KV grade 2.5
sq.mm stranded copper conductor, PVC insulated,
cables laid in GI conduits.
Padlocking arrangement to be provided.
A local TPN MCB to be provided in cabinet at power
supply incoming point.
All outgoing control wiring shall terminate on terminal
blocks, inside the cabinet so as to have maximum
access to all conductor terminals.
All auxiliary contacts of the disconnection switch and
earthing switches shall be supplied duly wired up to the
terminal blocks.
Stud type terminals with at least twenty (20) percent
spare terminals shall be provided over and above the
number actually required.
Polyurethane Paint Shade no. 692 of IS-5.
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Volume – I Technical Specification for Disconnecting Switch
2.14.10
Local Controls
2.15.0
Manual Operation
2.16.0
Disconnection switches
with Earth switch
2.17.0
Grounding Blades
Operation
2.18.0
Pivot bearings
2.19.0
Disconnection Switch
Poles & base
2.20.0
Grounding Pads
2.21.0
Counter-Balancing
Springs/ Weights
2.22.0
Name Plates
A local/ remote changeover switch shall be fitted inside
the cabinet together with open/ close push buttons for
local control.
Manual operation of disconnection switch by means of
crank handle disconnecting power supply to the 3-pole
operating mechanism on insertion into its socket. The
height of socket shall be about 1.2 meter above the
finished ground level of the substation.
Switch shall have three (3) grounding blades forming
integral part of the isolator. These blades shall be
capable of being fitted on either side of the brakes.
Flexible heavily tinned copper braids of adequate crosssectional area with connector suitable for the specified
short circuit current shall be provided on the hinged end
of the grounding blade for connection to the station
grounding grid.
Manually operated and interlocked with disconnection
switch so that the grounding blades can be closed only
when the disconnection switch is open.
Shall be maintenance-free and corrosion resistant.
Double tapered-roller bearings located 150 mm apart
suitable for ensuring smooth and dependable operation
of the disconnection switch shall be located at the base
of the supporting insulators. The earthing switch shaft
shall also be provided with necessary bearings. The
bearings shall be suitable for effective operation of
disconnection switch and earthing switches even after
long periods of their remaining in closed/ open position.
Each pole of the disconnection switch shall be provided
with a complete galvanized steel base designed for
mounting on a supporting structure/ gantry. The base
shall be rigid and self-supporting and shall require no
guying or cross bracing between phases. The group
operated isolators shall have a common supporting
structure for all the three (3) poles.
Each pole of disconnection switch shall be provided with
two (2) grounding pads of non-corrodible material
brazed to the channel base at opposite ends. Flexible
tinned copper (15-25 microns) connectors shall be
provided for a) Connection of earthing pad of each pole,
b) Operating handle, c) Earthing switches.
Springs/ weights of non-rusting alloy composition shall
be provided for counter-balancing the earthing switch
blades to prevent impact at the end of travel both on
opening and closing of the earthing switch.
Corrosion-proof nameplates giving all the relevant
mandatory as well as optional information as stipulated
in IS shall be provided on disconnection switches,
earthing switches and operating devices as per the
Owner's/ Consulting Engineer's approval.
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Volume – I Technical Specification for Disconnecting Switch
3.0
APPROVED MAKE OF COMPONENTS
3.1.0
3.2.0
3.3.0
3.4.0
3.5.0
3.6.0
3.7.0
3.8.0
4.0
Motors
Insulators
Switch
HRC Fuse Links
AC Contactors & O/L
Relay
Terminals
Push buttons / Actuator
MCB
L&T / Siemens / Schneider
Connectwell / Elmex
L&T / Teknic / Siemens
Merlin Gerin / Siemens / Schneider
TESTING & INSPECTION
4.1.0
Internal Test
4.2.0
Type test
4.3.0
4.4.0
4.5.0
Routine test
Acceptance test
Test Witness
4.5.2
4.5.3
4.6.0
Manufacturer shall carry out comprehensive inspection
and testing during manufacturing of the equipment.
The product must be of type tested quality. Type test
reports shall be submitted for the type, size & rating of
equipment offered along with bid. If the manufacturer’s lab
is accredited by govt./ authorized body then it shall be
acceptable for type testing.
As per relevant IS / IEC.
As per relevant IS / IEC.
The Buyer reserves the right to witness all tests specified
on completed product.
The Buyer reserves the right to inspect the product at the
Sellers works at any time prior to dispatch, to verify
compliance with the specifications.
In-process and final inspection call intimation shall be
given in advance to Owner.
4.5.1
5.0
ABB / Siemens / Crompton
JSI / WSI / Modern / BHEL/CJI
Kaycee / L&T (Salzer)
Alstom / Siemens / L&T
Tests on fitting and
Accessories
As per Manufacturer’s Standards and relevant IS / IEC.
DEVIATIONS
Deviation from this specification, if any, shall be clearly brought out in the offer. Unless owner
explicitly accepts such deviations, it shall be considered that the offer fully complies with the
specification.
179
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TECHNICAL SPECIFICATION
FOR
STRUCTURAL WORK
Prepared by
Rev: 0
Reviewed by
Date:
Approved by
180
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Volume – I Technical Specification Structural Work
1.0
GENERAL
1.1
The scope of specification covers design fabrication, proto assembly, supply and erection of
galvanized steel structures for towers, girders, and equipment support structures, towers
which shall be lattice type structures fabricated from structural steel conforming to IS:
2062(latest) The scope shall include supply and erection of all types of structures including
bolts, nuts, washers, hangers, shackles, clamps, anti climbing devices, bird guards, step
bolts, inserts in concrete, gusset plates equipment mounting bolts, structure earthing bolts,
foundation bolts, spring and flat washers, fixing plates and any other items as required to
complete the job.
1.2
The connection of all structures to their foundations shall be by base plates and embedded
anchor/foundation bolts. All steel structures and anchor anchor/foundation bolts shall be
galvanized. The weight of the zinc coating shall be at least 0.610 Kg/m2 for anchor
bolts/foundation bolts and for structural members. One additional nut shall be provided below
the base plate which may be used for the purpose of leveling.
2.0
DESIGN REQUIREMENTS FOR STRUCTURES
2.1
For design of steel structures loads such as dead loads, live loads, wind loads etc. shall be
based on IS: 802 Part 1 Sec 1
2.2
For material and permissible stresses IS: 802, Part-1, Section-2 shall be followed in general.
However additional requirements given in following paragraphs shall be also considered.
2.3
Minimum thickness of galvanized tower member shall be as follows:
Member
Minimum thickness (mm)
Leg members, ground wire
Peak members/main members
5
Other members
4
Redundant members
4
2.4
Maximum slenderness ratios for leg members, other stressed members and redundant
members for compression force shall be as per IS-802
2.5
Minimum distance from hole center to edge to adjacent hole shall be minimum 1.5 X bolt
diameter. Minimum distance between center to center of holes shall be 2.5 x bolt diameter.
2.6
The minimum bolt diameter shall be 16 mm.
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Volume – I Technical Specification Structural Work
2.7
Step Bolts
In order to facilitate inspection and maintenance, the structures shall be provided with
climbing devices. Each tower shall be provided with step bolts not less than 16mm diameter
and 175mm long spaced not more than 450mm apart, staggered on faces on one leg
extending from about 0.5M above ground level to the top of the tower. The step bolt shall
conform to IS: 10238
2.8
Design Criteria
a) All structures be designed for the worst combination of dead loads, live loads, wind loads
as per code IS 802 seismic forces as per code IS : 1893, importance factor of 1.5, loads
due to deviation of conductor, load due to unbalanced tension in conductor, torsion load
due to unbalanced vertical and horizontal forces, erection loads, short circuit forces shall
be calculated considering a fault level of 31.5KA for 3 secs. IEC-865 may be followed for
evaluation of short circuit forces.
b) Switchyard girders structure shall be designed for the two conditions i.e. normal condition
and short circuit condition. In both conditions the design of all structures shall be based
on the assumption that stringing is done only on one side i.e. all the three (phase)
conductors broken on the other side. Factor of safety of 2.0 under normal conditions and
1.5 under short circuit condition shall be considered on all external loads for the design of
switchyard structures, which are of lattice type.
c) Vertical load of half the span of conductors/string and the earth wires on either side of the
beam shall be taken into account for the purpose of design. Weight of man with tools
shall be considered as 150KGs for the design of structures.
d) Terminal / line take off girders shall be designed for a minimum conductor tension of
1000Kg per sub conductor per phase for 66KV. The distance between terminal girders
and the dead end tower shall be taken as per standard. The design of these terminal
girders shall also be checked considering +/- 30 deg deviation of conductor in both
vertical and horizontal planes. For other girders the structural layout requirements shall
be adopted in design.
e) The girders shall be connected with lattice columns be bolted joints.
f)
All support structures used for supporting equipments shall be designed for the worst
combination of dead loads, erection load. Wind load/seismic forces, short circuit forces.
Short circuit forces shall be calculated considering a fault level of 31.5KA for 3 seconds.
g) Foundation bolts shall be designed for the loads for which the structures are designed
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Volume – I Technical Specification Structural Work
3.0
DESIGN DRAWINGS, BILL OF MATERIAL & DOCUMENTS
3.1
The contractor shall furnish design, drawing and BOMs to the Owner after award of the
contract. However contractor shall have to prepare and submit any other drawings, bill of
material additionally required during design and construction stage which the Owner feels
necessary. In case Owner feels that any design drawing, BOM are to be modified even after
its approval, contractor shall modify the design & drawings and resubmit the design drawing,
BOM as required in the specification.
3.2
The fabrication drawings are to be provided and furnished by the contractor shall be based
on design approved by Owner. These fabrication drawings shall be based on the design
approved by the Owner. These fabrication drawings shall indicate complete details of
fabrication and erection including all erection splicing details, lacing details, weld sizes and
lengths. BOM in the Performa approved by the Owner shall be submitted. Bolt details and all
customary details in accordance with standard structural engineering practice whether or not
given by the Owner.
3.3
The fabrication work shall start only after the final approval to the design and drawings is
accorded by the Owner. The design drawing should indicate not only profile, but section,
numbers and sizes of bolts and details of typical joints.
3.4
Such approval shall however not relieve the contractor his responsibility for the safety of the
structure and good connections and any loss or damage occurring due to defective
fabrication design or workmanship shall be borne by the contractor.
4.0
FABRICATION OF STEEL MEMBERS
4.1
The fabrication and erection works shall be carried out generally in accordance with IS 802. A
reference however may be made to IS 800 in case of non-stipulation of some particular
provision in IS 802. All materials shall be completely shop fabricated and finished with proper
connection material and erection marks for ready assembly in the field.
5.0
PROTO – ASSEMBLY
5.1
The component parts shall be assembled in such a manner that are neither twisted not
otherwise damaged and shall be so prepared that the specific camber, if any, is provided. In
order to minimize distortion in member the component parts shall be positioned by using the
clamps, Clips, lugs, jigs and other suitable means and fasteners (bolts and weld) shall be
placed in a balanced pattern. If the individual components are to be bolted, paralleled and
tapered drifts shall be used to align the part so that the bolts can be accurately positioned.
5.2
Sample towers, beams and lightning masts and equipment structures shall be trial assembled
in the fabrication shop and shall be inspected and cleared by contractor based on the design
approval accorded by the Owner before mass fabrication.
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5.3
Pursuant to above the BOM’s along with proto-corrected fabrication drawing shall be
prepared and submitted by the main vendor to Owner as document for information. Such
BOM, which shall be the basis for the Owner to carry out inspection.
6.0
BOLTING
6.1
Every bolt shall be provided with two flat and one spring washer under the nut so that no part
of the threaded portion of the bolt is within the thickness of the parts bolted together. Locking
nut shall be provided with each grouting bolt.
6.2
All steel items, bolts, nuts and washers shall be hot dip galvanized.
6.3
2.0% extra nuts and bolts shall be supplied for erection.
7.0
WELDING
7.1
The work shall be done as per approved fabrication drawings, which clearly indicate various
details of joints to be welded, type of weld, length and size of weld, whether shop or site weld
etc. Symbols for welding on erection and shop drawings shall be according to IS 813. Efforts
shall be made to reduce site welding so as to avoid improper joints due to constructional
difficulties.
8.0
FOUNDATION BOLTS
8.1
Foundation bolts for the towers and equipment supporting structures and elsewhere shall be
embedded in first stage concrete while the foundation is cast. The contractor shall ensure the
proper alignment of these bolts to match the holes in the base plate.
8.2
The contractor shall be responsible for the correct alignment and leveling of all steel work on
site to ensure that the towers/structures are plumb.
8.3
All foundation bolts for lattice structures are to be supplied by the contractor.
8.4
All foundation bolts shall be fully galvanized so as to achieve 0.610 kg. Per Sq.m. of Zinc
coating as per specifications.
8.5
All foundation bolts shall conform to IS 5624 but the material shall be MS conforming to IS
2062.
9.0
STABILITY OF STRUCTURES
The method of grouting the column bases shall be subject to approval of Owner and shall be such
as to ensure complete uniformity of contact over the whole area of the steel base. The contractor
will be fully responsible for the grouting operations.
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10.0 GROUTING
The method of grouting the column bases shall be subject to approval of Owner and shall be such
as to ensure complete uniformity of contact over the whole area of the steel base. The contractor
will be fully responsible for the grouting operations.
11.0 GALVANISING
11.1 All structural steel works and support shall be galvanized after fabrication.
11.2 Zinc required for galvanizing shall have to be arranged by the manufacturer. Purity of zinc to
be used shall be 99.95% as per IS 209.
11.3 The contractor shall be required to make arrangement for frequent inspection by the Owner
as well as continuous inspection by a resident representative of the Owner, if so desired for
fabrication work.
12.0 TOUCH UP PAINTING
The touch up primers and paint shall consist of Zinc phosphate / Zinc chromate conforming to the
requirements of IS 2074 with a pigment to be specified by the Owner.
13.0 INSPECTION BEFORE DESPATCH
13.1 Each part of the fabricated steel work shall be inspected as per approved quality plans and
certified by the Owner or his authorized representative as satisfactory before it is dispatched
to the erection site.
13.2 Such certification shall not relieve the contractor of his responsibility regarding adequacy and
completeness of fabrication.
14.0 TEST CERTIFICATE
Copies of all test certificates relating to material by the contractor for the works shall be forwarded
to the Owner.
15.0 ERECTION
The contractor should arrange on his own all plant and equipment, welding set, tools and tackles,
scaffolding, trestles equipments and all other accessories and ancillaries required for carrying out
erection without causing any stresses in the members which may cause deformation and
permanent damage.
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16.0 SAFETY & PRECAUTION
The contractor shall strictly follow at all fabrication, transportation and erection of steel structures,
raw m, materials and other tools and tackles, the stipulations contained in Indian standard code for
safety during erection of structural steel work.
17.0 DEVIATIONS
Deviation from this specification, if any, shall be clearly brought out in the offer. Unless owner
explicitly accepts such deviations, it shall be considered that the offer fully complies with the
specification.
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TECHNICAL SPECIFICATION
FOR
OUTDOOR SWITCHYARD MATERIAL
Prepared by
Rev: 1
Reviewed by
Date:
Approved by
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1.0
INTENT OF SPECIFICATION
1.1
This specification is intended to cover the design, manufacture, assembly, testing at
manufacturer’s works, supply & delivery, properly packed for transport F.O.R site of 66KV
Outdoor Switchyard Material and Hardware complete with all accessories for efficient and
trouble free operation.
1.2
In the event of any discrepancy between listed documents, the stipulation of this specification
shall govern.
1.3
The specification shall be read and constructed in conjunction with other sections of bidding
document.
2.0
SCOPE OF WORK
2.1
Scope of Supply
Type, rating, connections etc. of the materials shall be as detailed in the drawings and
annexure. The materials shall be furnished in strict compliance with the same.
2.2
Following materials and hardware’s are to be furnished:
a)
b)
c)
d)
e)
f)
ACSR ZEBRA Conductor
G.S Shield Wire
Tension & Suspension Insulator String Assembly Sets
Disc Insulator & Post Insulators
Conductor Spacers, Clamps, Connectors.
Bay Marshalling Kiosk.
Any material or accessory, which may not have been specifically mentioned but which is
usual and / or necessary shall be supplied free of cost to the Owner.
3.0
GENERAL REQUIREMENTS
3.1
Codes and Standards
i)
All equipment and materials shall be designed, manufactured and tested in
accordance with the latest applicable Indian Standards (IS) & IEC Standard except
where modified and / or supplemented by this specification.
ii)
Equipment and material conforming to any other standard, which ensures equal or
better quality, may be accepted. In such cases, copies of the English version of the
standard adopted shall be submitted along with the bid.
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iii)
The electrical installation shall meet the requirements of Indian Electricity Rules as
amended upto date and relevant IS Codes of Practice. In addition other rules or
regulations applicable to the work followed. In case of any discrepancy, the more
restrictive rule shall be binding.
4.0
DESIGN CRITERIA
4.1
All the ACSR conductors, disc and string insulators, clamps & connectors, hardware’s etc.
will be used in extra high voltage system having characteristics as listed in the annexure.
4.2
All equipments, conductors, hardware’s, insulators & clamps etc. will be installed outdoor in a
hot, humid & tropical atmosphere.
4.3
The maximum temperature in any part of the clamps, connectors, conductors etc at specified
rating shall not exceed the permissible limit as stipulated in the relevant standards.
4.4
All equipments, conductors, clamps, connectors, insulators etc shall be capable of
withstanding the dynamic & thermal stresses of maximum short circuit current without any
damages or deterioration.
4.5
In order to avoid concentration of stresses, all sharp edges of clamps, connectors etc. shall
be rounded off.
4.6
Bi-metallic connectors shall be used for any connection between dissimilar materials.
5.0
SPECIFIC REQUIREMENT
5.1
Equipment & Materials
i)
ii)
iii)
iv)
5.2
Equipment & material shall comply with description, rating etc. as detailed in this
specification and annexure.
All accessories, fittings, supports, bolts etc. which form part of the equipment or
which are necessary for safe and satisfactory installation and operation of the
equipment shall be furnished.
All parts shall be made accurately to standard gauges so as to facilitate replacement
and repair. All corresponding parts of similar equipment shall be interchangeable.
After the treatment of steel surfaces damaged during transit sufficient quantity of anticorrosive paint shall be applied and subsequently finished with two coats of final
paint of approved shade.
ACSR Conductor
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i)
ii)
The Aluminum Standard conductor and steel reinforced shall have the technical
parameters matching with the requirements given in Annexure. ACSR conductors
shall conform to the latest revision of IS-398.
The material for ACSR conductor shall conform to the following:
Aluminum
The Aluminum strands shall be hard drawn from electrolytic Aluminium rods having
purity not less than 99.5% and a copper content not exceeding 0.04%.
Steel
The steel wire strands shall be drawn from high carbon steel wire rods and shall
conform to the following chemical composition:
Element -% Composition
Carbon - 0.50 to 0.85 Manganese - 0.50 to 1.10 Phosphorous -not more than 0.035
Sulphur -not more than 0.045 Silicon - 0.10 to 0.35
Zinc
The zinc used for galvanizing shall be electrolytic High Grade Zinc of 99.95% purity.
It shall conform to and satisfy all the requirements of IS: 209-1979.
5.3
5.4
Clamps and connectors
i)
All clamps, connectors and hardware’s shall be designed manufactured and tested
as per relevant standards.
ii)
All clamps & connectors for connection with ACSR conductors shall have high tensile
Aluminum alloy grade A6 body. U- Bolt and nut for the clamp shall be made of nonmagnetic material e.g. chromium steel.
iii)
Bolt, nut, washer, shackle etc. required for other purpose shall be of forged steel with
adequate strength and the surface shall be so protected as to offer maximum
resistance to corrosion. Malleable iron wherever used for any part shall be of best
quality and shall correspond to latest amendments of relevant IS.
iv)
Various fittings & accessories of the clamps & connectors shall be so designed as to
eliminate sharp edges & maintain bright smooth surface. All bolts, nuts, rivets etc.
shall have round profiles.
Disc Insulator
i)
All disc insulators shall be dimensioned appropriately so as to have the required
Electro- Mechanical strength for EHV outdoor duties.
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ii)
Suspension and tension insulators shall be wet process porcelain with ball and
socket connection. Glazing of the porcelain shall be uniform brown colour, free from
blisters, burrs and other similar defects. Insulators shall be interchangeable and shall
be suitable for forming either suspension or strain strings. Each insulator shall have
rated strength markings on porcelain printed and applied before firing.
iii)
When operating at normal rated voltage there shall be no electric discharge between
conductor and insulator which would cause corrosion or injury to conductors or
insulators by the formation of substances due to chemical action. No radio
interference shall be caused when operating at normal rated voltage.
iv)
Insulating shall be co-ordinated with basis impulse level of the system. The creepage
distance shall correspond to very heavily polluted atmosphere (31mm/KV)
v)
Porcelain used in insulator manufacture shall be homogeneous, free from lamination,
cavities and other flaws or imperfection that might affect the mechanical or dielectric
quality and shall be thoroughly vitrified, tough and impervious to moisture.
vi)
The design of the insulator shall be such that stresses due to expansion and
contraction in any part of the insulator shall not lead to deterioration. All ferrous parts
shall be hot dip galvanized in accordance with the latest edition of IS: 209. The zinc
coating shall be uniform, adherent, smooth, reasonably bright, continuous and free
from imperfection such as flux, ash, rust stains bulky white deposits and blisters.
vii)
Bidder shall make available data on the essential features of design including the
method of assembly of discs and metal parts, number of discs per insulators, the
manner in which mechanical stresses are transmitted through discs to adjacent parts,
provision for meeting expansion stresses, results of corona and thermal shock tests,
recommended working strength and any special design or arrangement employed to
increase life under service conditions.
viii)
Insulator hardware shall be of forged steel. Malleable cast iron shall not be accepted
except for insulator disc cap. The surface of hardware must be clean, smooth,
without cuts, abrasion or projections. No part shall be subjected to excessive
localized pressure. The metal parts shall not produce any noise generating corona
under operating conditions.
ix)
The insulator hardware assembly and clamps shall be designed for 120KN Tensile
load. The clamps shall be designed for 700 Kg tensile load. Earth wire tension clamp
shall be designed for 1000 Kg tensile load with a factor of safety of two (2).
x)
The tension string assemblies shall be supplied along with suitable turn buckle.
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5.5
5.6
Post Insulator Stack
i)
Post type insulators shall consist of a porcelain part permanently secured in a mental
base to be mounted upright. They shall be designed to withstand any shocks to
which they may be subjected to by the operation of the associated equipment. Only
solid core insulators will be acceptable.
ii)
Porcelain used shall be homogeneous, free from lamination, cavities and other flaws
or imperfection that might affect the mechanical or dielectric quality and shall be
thoroughly vitrified, tough and impervious to moisture.
iii)
Glazing of the Porcelain shall be of uniform brown in color, free from blisters, burrs
and other similar defects.
iv)
The insulator shall have alternate long and short sheds with aerodynamic profile. The
shed profile shall also meet the requirements of IEC-815 for the specified pollution
level.
v)
When operating at normal rated voltage there shall be no electric discharge between
conductor and insulators, which would cause corrosion or injury to conductors or
insulators by the formation of substances produced by chemical action.
vi)
The design if the insulators shall be such that stress due to expansion and
contraction in any part of the insulator shall not lead to deterioration.
vii)
All ferrous parts shall be hot dip galvanized in accordance with the latest edition of IS:
2633 & IS: 4579. The zinc used for galvanizing shall be grade Zn 99.95 as per IS:
209. The zinc coating shall be uniform, adherent, smooth, reasonably bright,
continuous and free from imperfections.
viii)
If corona extinction voltage is to be achieved with the help of corona ring or any other
similar device, the same shall be deemed to be included in the scope of the
manufacturer.
ix)
Post insulator shall be complete with necessary fixing clamp at top for clamping of
ACSR conductor, as required. The insulators shall be provided with necessary nuts,
bolts and washers.
Galvanized Steel Shield Wire
i)
Galvanized steel shield wire shall generally conform to IS 398 (Part-ll) except as
specified herein and in annexure. The steel strands shall be drawn from high carbon
steel rods produced by either acid or basic open health process, the electric furnace
process or basic oxygen process. The wire shall be hot dip galvanized.
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5.7
5.8
ii)
Zinc used for galvanizing shall be electrotype high-grade zinc of 99.5% purity and
shall conform to IS: 209 -1966. The hot dip galvanizing shall be done as per IS: 4826
- 1968 for heavy coating.
iii)
There shall be no joint of any kind in the finished strand wire entering into the
construction of earth wire.
iv)
The wire shall be 7/8SWG galvanized steel wire. The ultimate strength of individual
strand shall not be less than 1000 Kgs.
Bundle Spacers
i)
Bundle spacers shall have enough strength so as to restore normal spacing of
conductors after displacement by winds, short circuits etc. without damages or
permanent deformation. The spacers shall have long life without fatigue or wear and
shall have gentle but firm grip on conductor. They shall be able to withstand all the
electromagnetic and electrostatic forces under different operating conditions including
dead short circuit
ii)
They shall be one-piece construction and shall not have separate small components.
iii)
The materials used in spacers shall be corrosion resistant and made of Aluminum
alloy grade A6.
iv)
The spacers shall be flexible enough so as to avoid distortion or damages to the
conductor or themselves. Rigid spacers are not acceptable.
Marshalling Kiosk
i)
Marshalling Kiosk shall be furnished for each bay of 66KV switchyard. It is intended
to have all interlocking circuit, CT & PT connections (for star point) AC, DC
distribution in each bay through this cubicle. For this purpose, adequate terminals
shall be provided in this cubicle. The terminal blocks shall be installed at least at a
height of 200mm from bottom gland plate and gap between two terminal blocks shall
be at least 150mm.
ii)
The cubicle shall be outdoor type having IP-55 class of protection with suitable
canopy of gasketed weatherproof construction fabricated from sheet steel minimum
2mm thick.
iii)
The marshalling Kiosk shall have three distinct compartments for the following
purpose:
a) To receive two incoming 415V, 3phase, 32A, AC supply with auto changeover
and MCB unit and distribute 5 nos., 415V, 16A, AC supplies controlled by MCB
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b) To distribute 5 nos., 240V, 10A, single phase supplies to be controlled by MCB
and drawn from above 3 phase incomers.
c) 150nos. terminals blocks in vertical formation for interlocking facilities.
d) To receive 220V DC, two incoming supply and distribute the same to all the
circuit breaker, isolator and transformers of each bay.
5.9
iv)
The cubicle shall have front access door with lock and key and removable gland plate
at the bottom for cable entry Internal illumination lamp and 3- pin 5A socket with
individual ON-OFF switches shall be provided in the cubicle
v)
Suitable space heater with thermostat shall be provided to prevent condensation.
vi)
The cubicle shall be epoxy painted to shade 692 of IS 5.
Junction Box for CT, PT & CVT
i)
CT/CVT/PT separate junction box is not required. Instead the marshalling Kiosk can
be used for CT/PT/CVT connection. Although the contractor if wants to can also use
junction Boxes for these connection. The Boxes shall outdoor type having IP-55 class
of protection with suitable canopy of gasketed weatherproof construction fabricated
from sheet steel minimum 2mm thick.
ii)
The box shall have front access door with lock and key and removable gland plate at
the bottom for cable entry.
iii)
The junction box shall have stud type (non disconnecting) terminals. Arrangement
shall be provided for shorting of the secondary terminals while the CT is in energized
condition for testing and other purposes, if necessary. Sufficient space shall be
provided so that all terminals are accessible. No. of terminals shall be 20 nos. each in
a terminal block and 5 nos. such blocks in CT junction box and 3 nos. such terminal
blocks in CVT junction box.
iv)
All incoming and outgoing connections in the junction box shall be properly marked
with ferrules.
v)
The box shall be epoxy painted to shade 692 of IS 5
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5.10 Aluminum Pipe Busbar
5.10.1 Codes and Standards:
Standard Name / No
IS 2678
IS 738
Standard’s Description
Dimensions and tolerances for wrought aluminium and aluminium
alloy drawn round tube
Wrought aluminium alloys, drawn tube for general engineering
purposes
5.10.2 Erection of Aluminum Pipe Busbar
i)
Aluminum pipes are used for 66kV bus bar jumpers and interconnections at 66 kV Grid
Substation. The nominal outer diameter of the pipes is 80 mm and wall thickness 8 mm.
ii)
The minimum height of the 66 kV main bus is 6.4 meters.
iii)
Longitudinal connection between the pipes for main Busbar shall be either by Welding or by
flexible jumpers of suitable Size/Rating.
iv)
Welding to pipes should be done on ground using straight run couplers.
v)
In case the bus height changes, then the pipes at the different levels shall be welded
together with a piece of pipe using appropriate angular couplers (90° or 135°) prior
approval to be obtained from purchaser.
vi)
Suitable vibration damper should be placed/inserted in the pipe busbar.
vii)
Jumpers from equipment to equipment and from equipment to bus shall be either direct by
connected or supported on post insulators. One Jumper shall be a single continuous length
of Pipe.
viii)
If required length of jumpers is more than one pipe length and where angles are required to
be given in the jumpers, welding of aluminum pipe to pipe or pipe to angular connectors
shall be done.
ix)
All the open ends of pipes shall be closed with corona end shields.
x)
All joints/Coupling shall be done meeting the best Industrial practices/Standards
xi)
Each and every joint shall be subjected to:
a) Physical examination.
b) Liquid penetration test.
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6.0
TESTS
6.1
Routine Tests
i)
During manufacture and on completion of all equipment, conductors, insulators,
clamps, connectors and accessories shall be routine tested as per applicable
standards at manufacture’s works.
ii)
The suspension and tension strings, insulator discs and hardware shall be subjected
to the following, acceptance tests and routine tests:
a)
b)
c)
d)
e)
f)
g)
h)
Visual examination
Verification of Dimensions as per Cl no. 10.5 of IS: 731
Temperature cycle test as per Cl no. 10.6 of IS: 731
Puncture test as per Cl no. 10.10 of IS: 731
Galvanizing test as per Cl no. 10.12 of IS: 731
Mechanical performance test as per IEC-575 Cl. 4
Test on locking device for ball & socket coupling as per IEC-372 (2)
Porosity test as per Cl no. 10.11 of IS: 731
Acceptance Tests
a)
b)
c)
d)
e)
Visual examination as per CI. 5.10 Of IS: 2468 (Part-1)
Verification of Dimensions as per CI. 5.8 Of IS: 2468 (Part-1)
Galvanizing / Electroplating test as per CI. 5.9 Of IS: 2468 (Part-1)
Slip strength test as per CI. 5.4 Of IS: 2468 (Part-1)
Shore hardness test for the Elastomer (if applicable as per the value guaranteed
by the Bidder)
f) Mechanical strength test for each component (including grading rings and arcing
horns).
g) Test on locking devices for ball and socket coupling as per IEC: 372 (2)
Routine Tests on Disc Insulator / Long rod Insulator
a) Visual Inspection as per CI No. 10.13 of IS: 731
b) Mechanical Routine Test as per CI No. 10.14 of IS: 731
c) Electrical Routine Test as per CI No. 10.15 of IS: 731
Routine Tests on Hardware Fittings
a) Visual examination as per CI. 5.10 Of IS: 2468 (Part-1)
b) Mechanical strength Test as per CI. 5.11 Of IS: 2468 (Part-1)
Test during manufacture on all components as applicable on Disc Insulator
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a) Chemical analysis of zinc used for galvanizing:
Samples taken from the zinc ingot shall be chemically analyzed as per IS: 209. The
purity of zinc shall not be less than 99.95%.
b) Chemical analysis, mechanical hardness tests and magnetic particle inspection
for malleable casting:
The chemical analysis, hardness tests and magnetic particle inspection for malleable
casting will be as per the internationally recognized procedure for these tests. The
sampling will be based on heat number and heat treatment batch
Test during manufacture on all components as applicable on hardware fittings
a) Chemical analysis of zinc used for galvanizing
Samples taken from the zinc ingot shall be chemically analyzed as per IS: 209. The
purity of zinc shall not be less than 99.95%.
b) Chemical analysis, mechanical hardness tests and magnetic particle inspection
for malleable casting:
The chemical analysis, hardness tests and magnetic particle inspection for malleable
casting will be as per the internationally recognized procedure for these tests. The
sampling will be based on heat number and heat treatment batch
c) Chemical analysis, mechanical hardness tests and magnetic particle inspection
for fabricated hardware.
The chemical analysis, hardness tests and magnetic particle inspection for fabricated
hardware will be as per the internationally recognized procedure for these tests. The
sampling will be based on heat number and heat treatment batch.
iii)
The following, acceptance & routine tests and tests during manufacturing shall be
carried out on the conductor.
Acceptance Tests
a)
b)
c)
d)
Visual check for joints, scratches etc. and
length of conductor
Dimensional check on steel and Aluminum
strands
Check for lay ratio of various layers
Galvanizing test on steel strands
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e)
f)
g)
h)
i)
Torsion and Elongation test on steel
strands
Breaking load test on steel and Aluminum
strands
Wrap test on steel and Aluminum strands
IS: 398(Part-V) 1982
Clauses 12.5.2, 12.7 &
12.8
DC resistance test on Aluminum strands
UTS test on welded joint of Aluminum
strands
NOTE: All the above tests except test mentioned at (i) shall be carried out on
Aluminum and steel strands after stranding only
Routine Tests
a) Check to ensure that the joints are as per specification
b) Check that there are no cuts, fins etc. on the strands
iv)
The following type, routine & acceptance tests and tests during manufacturing shall
be carried out on the earth wire.
Acceptance Tests
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
Visual check for joints, scratches etc. and length of Earth wire
Dimensional check
Galvanizing test
Lay length check
Torsion test
Elongation test
Wrap test
DC resistance test : IS: 398 (Part lll) 1976
Breaking load test
Chemical Analysis of steel
Routine Tests
a) Check that there are no cuts, fins etc. on the strands.
b) Check for correctness of stranding
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6.2
Type Test
Test certificates for type tests shall be from CPRI/ERDA/NABL approved lab, as stipulated in
Indian Standards carried out on similar equipment shall be furnished. If test certificate for any
of the type test is not available, the same shall be carried out free of cost from
CPRI/ERDA/NABL.
6.3
Test Witness
Tests shall be performed in presence of Owner’s representative if so desired by the Owner.
The contractor shall give at least fifteen (15) days advance notice of the date when the tests
are to be carried out.
6.4
7.0
Test Certificates
i)
Certified copies of all tests carried out at works shall be furnished in requisite no. of
copies as stated in the condition of contract for approval of the Owner. The
certificates shall furnish complete identification, date including serial number of each
material and accessory.
ii)
Equipment shall be dispatched from works only after receipt of Owner’s written
approval of shop test reports.
iii)
Type test certificate on any equipment, if so desired by the Owner, shall be furnished.
Otherwise, the equipment shall have to be type tested, free of charge, to prove the
design.
SPARES
The Bidder shall submit a list of recommended spare parts for three (3) years of satisfactory
and trouble free operation, indicating itemized price of each item of the spares.
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8.0
DRAWING & DOCUMENTS TO BE FURNISHED
8.1
To be submitted with each copy of the Bid
i)
ii)
iii)
Typical general arrangement drawing of the equipment / items.
Technical leaflets on equipment / items expending constructional features.
Type test certificates on similar equipment / items.
To be submitted for Approval and Distribution
8.2
i)
ii)
iii)
iv)
v)
Dimensional general arrangement drawing showing disposition of various fittings for
equipment, accessories, components etc.
Assembly drawing for erection at site with part numbers and schedule of materials.
Type & Routine test certificates
Technical leaflets on equipment / items
Back-up calculation for:
a)
b)
c)
d)
vi)
Selection of equipment / material ratings.
Sag-Tension of ACSR.
Lighting protection system
Selection of rigid bus support spacing.
Any other relevant drawing, documents, calculations and data necessary for
satisfactory installation, operation and maintenance.
DESCRIPTION OF HARDWARE TO BE SUPPLIED UNDER THIS SPECIFICATION
SL. NO.
1.0
a)
b)
c)
d)
2.0
a)
b)
c)
d)
DESCRIPTION
66KV Tension String (Ball dia. 20mm)
Double Tension String with double anchor, tension clamps suitable for Twin ZEBRA
conductor.
Double Tension String with double anchor, tension clamps suitable for Twin ZEBRA
conductor.
Double Tension String with double anchor, tension clamps suitable for Single ZEBRA
conductor, with turnbuckle and metal parts
Double Tension String with double anchor, tension clamps suitable for Single ZEBRA
conductor.
66KV Suspension String (Ball dia 20mm)
Single Suspension string including arching horn, drop clamp suitable for Single Zebra
conductor (sub conductor spacing of 250mm), metal parts
Single Suspension string including arching horn, drop clamp suitable for Twin Zebra
conductor (sub conductor spacing of 250mm), metal parts
Single Suspension string including arching horn, suspension clamp suitable for Single
Zebra conductor (sub conductor spacing of 250mm), metal parts
Single Suspension string including arching horn, suspension clamp suitable for Twin
Zebra conductor (sub conductor spacing of 250mm), metal parts
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Volume – I Technical Specification Outdoor Switchyard Material
3.0
a)
b)
c)
d)
4.0
a)
b)
5.0
6.0
Bolted Type Clamp
Tee connector Twin Zebra to Twin Zebra, Vertical take-off
Tee connector Twin Zebra to Single Zebra
Tee connector Single Zebra to Single Zebra.
Parallel Groove clamp Single Zebra to Single Zebra
Flexible Spacer
Suitable for Single Zebra with sub conductor spacing of 250mm
Suitable for Twin Zebra with sub conductor spacing of 250mm
Shield Wire Tension clamp
Disc insulator Unit
Bidder to note that the above type of hardware is a minimum requirement and indicated for
guidance only. Bidder shall estimate the quantity and types of hardware and offer and supply
accordingly for successful operation of the installation.
9.0
DEVIATIONS
Deviation from this specification, if any, shall be clearly brought out in the offer. Unless owner
explicitly accepts such deviations, it shall be considered that the offer fully complies with the
specification.
201
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Volume – I Technical Specification Outdoor Switchyard Material
RATINGS & REQUIREMENTS
1.0
1.1
CONDUCTORS
ACSR Conductor
1.1.1
Reference standard :
IS 398
1.1.2
Code Name :
ZEBRA
1.1.3
Type :
ACSR
1.1.4
1.1.5
Overall diameter
Stranding no. of wire and diameter :
28.62mm
54/3.18 (Al)
7/3.18 (St)
Number of strands Core
1
1st Layer
6
2nd Layer
12
3rd Layer
18
4th Layer
24
1.1.6
Sectional area of Aluminum :
428.9 sq.mm
1.1.7
Total Sectional area :
484.5 sq.mm
1.1.9
1.1.10
Ultimate Strength (min) :
Calculated DC resistance at 20 Deg C :
130.32 KN
0.06868 ohm/Km
NOTE – The 66KV Main Bus Shall be with TWIN ZEBRA. The equipment bay shall be Single
Zebra.
2.0
GALVANISED STEEL SHIELD WIRE
2.1
Reference standard :
2.2.
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.1.1
3.1.2
3.2
3.3
3.4
3.5
IS 398
Steel core-1, outer
Number of strands
layer-6
Total sectional area
54.55 sq.mm
Overall diameter
9.45 mm
Approximate weight
428 kg/km
Calculated DC. resistance at 200C
3.37 ohms/km
Minimum ultimate tensile strength
56 KN
Direction of lay of outer layer
Right hand
Minimum tensile strength
110 Kgf/mm2
CONNECTORS / PG CLAMP ASSEMBLY / SPACER
Reference standard :
Clamp / Connector
IS 5561
Spacer
IS 10162
Material
Aluminum Alloy A6
Continuous current carrying capacity (r.m.s) at
50deg C ambient temp.
2000A (min)
Short time current carrying capacity
31.5KA for 3 sec
Maximum temperature rise over Ambient of 50
35 deg C
202
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Volume – I Technical Specification Outdoor Switchyard Material
4.0
4.1
4.1.1
4.1.2
4.2
4.3
4.4
4.4.1
4.4.2
4.4.3
4.4.4
4.5
4.5.1
4.5.2
4.6
4.7
deg C
INSULATORS
Reference standard
String Insulators/Insulator fittings
Post Insulators
Type
Cylindrical solid
Core type,
Suspension &
Tension Insulator
Service
System details
Voltage
Nos. of phases
Frequency
System neutral earthing
Insulation Level
Dry power frequency withstand
Wet power frequency withstands
Impulse withstand
Creepage
IS 731/ IS 2486
IS 2544
Post Insulator-
Outdoor
66/72.5KV
(Nom/Max)
3
50Hz
Effectively earthed
140KV r.m.s
140KV r.m.s
325KV
31mm/KV
Bus Post Insulators shall have minimum cantilever strength of 800Kg and minimum torsion moment
of 500 Kg.
FITTINGS AND ACCESSORIES OF INSULATORS
Each insulator shall be furnished complete with the fittings and accessories as listed below
according to requirement
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Suspension top fitting
Suspension clamp fitting
Conductor suspension clamp
Tension end fitting
Tension (anchor) clamp adopter
Conductor tension (anchor) clamp
Top metal fitting
Bottom metal fitting
Nuts, Cotter pin, security clips etc.
Forged pin, studs etc.
Other standard accessories which are not specifically mentioned but usually provided with insulator
of such type and rating for efficient and trouble free operation.
203
BSES Bhawan, Nehru Place, New Delhi- 19
TECHNICAL SPECIFICATION
FOR
BATTERY CHARGER
Prepared by
Sandhya Varshney
Rev: 0
Reviewed by
Meenakshi
Date:
Approved by
Kiran Kumar Alla
204
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Volume – I Technical Specification for Battery Charger
1.0
CODES & STANDARDS:
Material, equipment and methods used in the manufacture of battery charger shall confirm to the
latest edition of following standard: Standard Name / No
Indian Electricity Rules
Standard’s Description
Relevant safety regulation of CEA
Indian Electricity Act 2003
CBIP manual
IS 3895
Specification for rectifier equipment in general
IS 5921
Printed circuit boards
IS 6619
Safety code for semiconductor devices
IS 4540
IS 694
IS 1248
IS 2705
Semiconductor rectifier assemblies and equipment
PVC Insulated Cables for Working Voltage up to and including
1100 V
Direct Acting Electrical indicating instruments
Current transformer
IS 3156
Voltage transformer
IS 3231
Electric relay for power system protection
IS 5578
Guide for making of insulated conductors
IS 8623
Low voltage switchgear and control gear assemblies
IS 13703
Low voltage fuses for voltages not exceeding 1000AC
IS 12063
Degree of enclosure protection
IS5
Color of mixed paints
IS 6297
Transformer & inductors for electronic equipment
IS 6553
Environment requirements for semiconductor device
IS 4007
Terminals for electronic equipment
2.0
DOCUMENTS REQUIRED
In the event of direct conflict between various order documents, the precedence of authority of
documents shall be as follows –
i.
Guaranteed Technical Particulars (GTP)
ii.
Specification including applicable loads
iii.
Approved vendor drawings
iv.
Other documents
v.
Battery Charger sizing calculation
205
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Volume – I Technical Specification for Battery Charger
3.0
CHARGER DESIGN FEATURES:
The equipment shall have all the following features –
3.1
Configuration
3.2
Panel type
As per calculation during detailed engineering with
2X100% Float cum Boost Charger.
Metal enclosed frame construction
3.3
Location
Indoor, non air conditioned environment
3.4
Doors for front access
With anti theft hinge &handle
3.5
Cover for rear access
With Allen screw M6 size & handle
3.6
Construction
Sheet metal 2.0mm thick CRCA
3.7
Base frame
75mm ISMC
3.8
3.9
Lifting lugs
Gland plate
Four number
3mm metallic, un drilled & removable type
3.10
Enclosure protection
IP42 Minimum
3.11
Power terminal
Bus bar type, minimum 300mm above gland plate
3.12
Control terminal
Nylon66 with brass clamp
3.13
Bus bar
Tinned copper with insulation sleeve
3.14
Earth bus bar
Aluminum sized for rated fault duty for 1sec
3.15
By copper flexible wire 2.5 sqmm
3.17
Earth bus internal connection to all
non current carrying metal parts
Earth bus external connection to
owner earth
Cooling
Al bus on both sides of panel with two holes for M10
bolt
Natural ventilation without fan
3.18
Panel heater
Thermostatically controlled through MCB
3.19
Panel internal wiring
3.20
Input isolation transformer
Multi strand flexible color coded PVC insulated
copper wire 1.5 sqmm 1100volt grade with 1.5 sqmm
ferruling (other than circuit wiring related to PCB
cards )
Dry type
3.21
Isolation & protection device
Mounted at height minimum 1000mm from bottom
3.21.1
MCCB
For charger input, output & battery input
3.21.2
Battery & test resistor load
3.22
Hardware (Nut, bolts & handle)
Lockable change over switch with one position for
charger, second for ‘OFF’ & third position for external
test resistor.
Stainless steel
3.23
Charger configuration
3.23.1
Type
3.23.2
Pulse
3.16
3 phase full wave full controlled semiconductor
rectifier with heat sink
Minimum six pulse
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Volume – I Technical Specification for Battery Charger
3.23.3
Essential provision
Surge suppression, harmonic suppression, blocking
diodes, filters for ripple control
On all live parts, power semi conductors & electronic
components
If integral with charger, shall be given in separate
compartment / shipping section
Number & rating as per requirement. Each
equipment shall have separate outgoing feeder.
All double pole MCB with insulating shrouds located
inside panel
1% maximum
3.23.4
Insulating shrouds
3.24
DC distribution board
3.24.1
Outgoing feeder
3.24.2
Feeder type
3.25
Ripple content in DC output
3.26
DC output voltage regulation
3.27
Reverse polarity connection
Maximum ±1% of rating with AC input supply
variation of ±10% from 415 volts, frequency variation
of ±5% from 50 HZ and simultaneous load variation
of 0-100%
Protected against reversed battery polarity
3.28
Charger efficiency
85% minimum
3.29
Noise output
65DB maximum
3.30
Charger selector switch
3.31
Charging current settings
For auto/manual and float/boost selection, lockable
type inside panel
25% to 100% of rating
3.32
Charging current accuracy
3.33
3.34
DC output adjustment range for
float & boost charge (voltage &
current)
Louvers
3.35
Gasket
Neoprene rubber
3.36
MCB controlled, with 5/15amp switch socket
3.37
Panel illumination lamp with door
switch
Panel door keys
4 no. per panel, identical key for all panels
3.38
PCBs for electronic circuitry
With protective layer finish at back
3.38.1
PCB soldering
Preferably by wave soldering process
3.38.2
PCB/ electronic card mounting
With press fit type locking arrangement
3.39
Semiconductor component
mounting
Shall not be on bakelite sheet
2% of set current with input voltage variation of ±10%
and frequency variation of ±5%
By potentiometers inside panel, range suitable for
NiCd as well as Lead Acid battery bank
With stainless steel wire mesh
207
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Volume – I Technical Specification for Battery Charger
4.0 METERING, ANNUNCIATIONINS & INDICATION:
4.1
Ammeter (96x96mm)
4.2
Voltmeter (96x96mm)
4.3
LED indication on panel front
4.3.1
Status
4.3.1.1
Red/yellow/blue color LED
4.3.1.3
Input AC supply available on R,Y &
B phase
Float cum Boost charger AC
MCCB ‘ON’
Charger output DC ‘ON’
4.3.1.4
Outgoing DCDB feeder ON
Red color LED for each other
4.3.2
Fault
4.3.2.1
DC earth fault
Amber color LED
4.3.2.2
Battery MCCB OFF
Amber color LED
4.3.2.3
Amber color LED
4.3.2.4
Charger output DC under/ over
voltage
AC mains under
4.4
Annunciation
Hooter with isolating switch for fault annunciation.
4.5
Potential free contacts for remote
indication
Wired to terminal blocks
4.3.1.2
Digital type, for AC input, DC output & battery
current
Digital type, with selector switch for AC input, DC
output & battery voltage
Red color LED for each charger module
Red color LED for each charger module
Amber color LED
4.5.1
Battery on boost
4.5.2
DC bus under voltage
4.5.3
DC bus over voltage
4.5.4
DC bus earth fault
4.5.5
Battery MCCB trip/ OFF
4.5.6
Common charger trouble
4.6
Common charger trouble to
include-
4.6.1
Incoming AC under voltage
4.6.2
Incoming AC over voltage
4.6.3
Charger input MCCB trip/ OFF
4.6.4
Charger output MCCB trip/ OFF
4.6.5
Charger Dc under voltage
All the charger trouble conditions shall have a
potential free contact wired to terminal block and
annunciation in the form of separate annunciation
or on display unit of common controller
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Volume – I Technical Specification for Battery Charger
4.6.6
Charger Dc over voltage
4.6.7
Charger rectifier fuse blown
4.7
Communication
All the above alarm, analog signal etc shall be
available at single port on modbus protocol for
SCADA.
5.0 APPROVED MAKE & COMPONENTS
5.1
Switch
Siemens / L&T (Salzer)
5.2
HRC Fuse Links
GE/ Siemens/ L&T
5.3
Diodes & SCR
Hirect/USHA/IOR
5.4
Meters
IMP/AE/Rishabh
5.5
AC Contractors &O/L Relay
L&T/Siemens/Telemechanique/GE/ABB
5.6
Terminals
Connectwell/Elmex/Wago/Phoenix
5.7
Push buttons / Actuator
L&T/Siemens/Vaishno
5.8
MCCB
L&T/Siemens/ ABB/GE
5.9
MCB
Datar/Legrand/Hager/Schneider
5.10
Indicating lamps LED type
Vaishno/Binay/Teknic/Siemens/Mimic
Note – Any other make or component to be approved by owner.
6.0 MMIC DIAGRAM, LABEL & FINISH
6.1
Mimic diagram
To be provided
6.2
Name plate on panel front
6.2.1
Material
Anodized Aluminum 16SWG
6.2.2
Background
SATIN SILVER
6.2.3
Letter, diagram & border
Black
6.2.4
Process
Etching
6.2.5
Name plate details
6.3
Labels for meters, indication & all
cards / sub assemblies in panel
Danger plate on front & rear side
Manufacturer name, month & year of manufacture,
equipment type ,input & output rating, Owner name
& order number, guarantee period, weight of panel,
degree of protection, Sr. No.
Anodized Aluminum with white character on black
background
Anodized Aluminum with white letters on red
background
Shot blasting or chemical 7 tank process
6.4
6.5
Painting surface preparation
6.6
Painting external finish
6.7
Painting internal finish
6.8
Labels for all components in panel
Powder coated polyester base grade A, shade –
RAL 7032, uniform
Powder coated polyester base grade A, shade –
white, uniform thickness 50 micron minimum
Anodized Aluminum with white character on black
background, fixed by rivets only
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Volume – I Technical Specification for Battery Charger
7.0
INSPECTION & TESTING
7.1
Type test
7.2
7.3
Routine test
Acceptance test
8.0
Equipment of type tested quality only, type test
certificate to be submitted along with offer If the
manufacturer’s lab is accredited by govt. /
authorized body then it shall be acceptable for type
testing.
As per relevant Indian standard
To be performed in presence of Owner at
manufacturer works
- Physical inspection & BOM, wiring check
- Insulation resistance test
- HV test for one minute
- Voltage regulation test
- Heat run test for 12 hours
- Measurement of efficiency, power factor & ripple
content
DEVIATIONS
Deviation from this specification, if any, shall be clearly brought out in the offer. Unless owner
explicitly accepts such deviations, it shall be considered that the offer fully complies with the
specification.
210
BSES Bhawan, Nehru Place, New Delhi- 19
TECHNICAL SPECIFICATION
FOR
Ni – Cd BATTERY
Prepared by
Hemanshi Kaul
Reviewed by
Kiran Kumar Alla
Approved by
Kiran Kumar Alla
Rev: 1
Date: 25.11.2013
211
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for Ni-Cd Battery
1.0
CODES & STANDARDS:
Material, equipment and methods used in the manufacturing of Ni – Cd battery shall confirm to the
latest edition of following stadard
Standard Name / No
Standard’s Description
Indian Electricity Act 2003
CBIP manual
IEC 60623
IS 10918
IS 5
IS 13703
Indian Electricity Act
CBIP manual
IEC 60623
IS 10918
IS 5578
IS 694
IS 5
IS 13703
IS 1248
IEEE
IS 5578
1115
2.0
DOCUMENTS REQUIRED
In the event of direct conflict between various order documents, the precedence of authority of
documents shall be as follows –
i. Guaranteed Technical Particulars (GTP)
ii. Specification including applicable loads
iii. Approved vendor drawings
iv. Other documents
v. Battery sizing calculation
3.0
DC DISTRIBUTION SYSTEM DATA
3.1
DC Supply
2 wire, with positive & negative polarity
3.2
Earth reference
Unearthed system
3.3
Voltage
220V
3.4
Application - Industrial
Standby DC back up for switchgear control supply &
SCADA RTU
4.28
Ambient temperature
(i)
Maximum
+50⁰C
(ii)
Minimum
0⁰C
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Volume – I Technical Specification for Ni-Cd Battery
4.0
BATTERY BANK DESIGN FEATURES:
The equipment shall have all the following features –
4.1
DC battery bank Ah rating & sizing
As per calculation ( minimum 150Ah)
4.2
DC load curve
With High discharge characteristics.
4.3
Location of battery bank
Indoor
4.4
Mounting of battery bank
On steel rack, painted with anti corrosive paint.
4.5
Arrangement
4.6
Battery type
4.6.1
DC battery electrode type
Battery cells connected in series with multi step two
tier formations without tap cell arrangement.
Storage type rechargeable wet cell and KPH type
only
Fiber plate /pocket plate
4.7
4.8
Battery cell
Venting device
Vented cell closed type
Anti- splash
4.9
Battery cell container
4.10
Battery cell lifting arrangement
Translucent, prismatic, non flammable, poly
propylene
Suitable arrangement on cell
4.11
Electrolyte sampling & servicing
Alkali resistant material cap on cell top
4.12
Battery cell designation
To be marked on cell as per relevant standard
4.13
Battery cell marking
4.14
4.15
Battery electrolyte level – minimum
& maximum
Battery cell electrolyte
Manufacturer name & type, month & year of
manufacturer, nominal voltage, rated Ahr capacity &
cell number
To be marked on cell container
4.16
Electrolyte specific gravity
To be specified by supplier at 27 deg C
4.17
Nominal cell voltage
1.2 volt for Ni-Cd
4.18
Battery terminals
Stud type
4.19
Terminal polarity marking
Positive& negative marked on cell
4.20
Battery cell shorting metal links
Nickel plated copper with protective insulating sleeve
4.21
Insulating shrouds
For all battery cell terminals & shorting links
4.22
Insulating pads for battery rack
4.23
Battery suitable for Ripple content
At the bottom of rack supports, made from high
impact material
5% minimum in DC charger output
4.24
Power terminal with insulator
4.25
Cooling
4.26
Tools & accessories to be supplied
with each battery set
KOH solution in distilled water
Bus bar type mounted on rack suitable for 70sqmm
cable
Nature ventilation
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Volume – I Technical Specification for Ni-Cd Battery
4.26.1
Set of thermometers
4.26.2
4.26.3
Rubber hand gloves / eye protection goggle &
specific gravity test kit
Portable DC volt meter
4.26.4
Funnel with filter
4.26.5
Mug for filling electrolyte
4.26.6
Wall mounted box to keep all accessories
6.0
INSPECTION & TESTING
6.1
Type test
6.2
6.3
Routine test
Acceptance test
7.0
Equipment shall be of type tested quality as per
IEC for fiber plate battery & as per IS for pocket
plate battery If the manufacturer’s lab is accredited
by govt. / authorized body then it shall be
acceptable for type testing
As per relevant standard
To be performed in presence of Owner at
manufacturer works
- Physical inspection & BOM, wiring check
- Insulation resistance test
- HV test for one minute
- Charge discharge test
- Measurement of efficiency & temperature rise for
above
DEVIATIONS
Deviation from this specification, if any, shall be clearly brought out in the offer. Unless owner
explicitly accepts such deviations, it shall be considered that the offer fully complies with the
specification.
214
BSES Bhawan, Nehru Place, New Delhi- 19
TECHNICAL SPECIFICATION
FOR
415V AC DISTRIBUTION BOARDS
Prepared by
Supriya Raina
Rev: 0
Reviewed by
Meenakshi Banerji
Date: 25.11.2013
Approved by
Kiran K Alla
215
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Volume – I Technical Specification for 415V AC Distribution Board
1.0
415V AC DISTRIBUTION BOARDS:
1.1
The AC distribution board shall be located in the Substation Building and shall be in two
sections, each section fed by 415V, 3-phase supply from i) Station Aux Transformer ii) Shall
be left for use in future. Each load center will be fed with separate outlet/ outgoing feeder.
Auto changeover shall be provided between the two incomers with necessary interlocks.
1.2
The distribution boards shall be of modular construction with provision for complete
compartmentalization of all feeders. It shall be free-standing, dead front type comprising dusttight and vermin-proof sheet steel cabinets suitable for indoor installation with IP-54 degree of
protection. The distribution boards shall be complete with necessary bus bar support
insulators, cable glands, cable supports, terminal blocks, name-plates etc. All switches
provided on the distribution board shall be on front side of the cabinets, operable from
outside. The doors of cabinets shall be lockable. All instruments and control devices shall be
mounted on the front of cabinets and fully wired to the terminal blocks. The board shall
preferably be of the single front type, in fixed execution.
1.3
The various modules constituting the boards shall be provided with equipment/components
such as switches, contactors, relays, control MCCB, ammeters, and voltmeters, terminal
blocks etc. as required for complete circuit of the respective module.
1.4
The Boards shall be made out of at least 2.0 mm thick cold rolled steel sheet, suitably
reinforced to provide flat level surfaces. Gland plate shall be 3.0mm thick. No welds, rivets,
hinges or bolts shall be visible from outside. The doors shall be fitted with double lipped
gaskets (subject to approval).
1.5
All cables shall enter and leave from bottom. Suitable cable terminal blocks with cable lugs
shall be provided inside each cabinet for the incoming and outgoing cables. The terminals
shall be serially numbered to facilitate installation and maintenance. Main busbars shall be
accommodate in busbar chambers and cable alleys arranged by their side. Compression type
cable glands shall be provided to hold the cables to avoid any pressure or tension on the
terminal block connections. The terminal blocks shall be easily accessible for inspection and
checking.
1.6
All the load break switches on the board shall be rotary type and shall be key operated.
1.7
The boards shall be given one primer coat followed by two finishing coats of epoxy based
paint of light grey of Shade RAL 7032 with glossy finish.
1.8
The AC boards shall be provided with the following equipments wherever applicable:
i.
ii.
iii.
Busbars of adequate rating.
Terminal arrangement with necessary equipment for connecting the
incoming supply.
Module for voltage and current measurement in the incomer feeder.
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Volume – I Technical Specification for 415V AC Distribution Board
iv.
1.9
Outgoing modules with switch / MCCB units of adequate capacity for the
outgoing feeders and 20% spare feeder units of each rating.
v.
Necessary cable glands and terminal blocks.
vi.
Adequate number of spare terminals on terminal blocks for receiving
connections from the spare contacts of the relays and for external
connections.
The number of outgoing feeders from AC boards shall be such that each substation
equipment is fed by separate feeder with 20% as spare(refer below table).
S.No
Application
1
2
Incomer
Transformer Oil
filtration
Power Socket( Indoor)
Welding(Outdoor)
Outdoor Lighting
Indoor Lighting
BMK
Marshalling Box(PTR)
Battery Charger
AC Supply
UPS
11kV Switchgear
CRP
RTU/SCADA
Fire Fighting
EPAX
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Type of
Switchgear
MCCB*
MCCB*
No of
Poles
4
4
Rating (A)
Quantity
630
100
2
2
MCB*
MCB*
MCB*
MCB*
MCB*
MCB*
MCB*
MCB*
MCB*
MCB*
MCB*
MCB*
MCB*
MCB*
4
2
4
4
4
4
4
4
2
2
2
2
2
2
63
63
32
32
32
32
32
32
16
16
16
16
16
16
1
4
2
2
8
3
2
2
1
3
2
2
1
1
*Approved Make of MCCB/MCB:-Schneider/ABB/L&T
2.0 INSTRUMENTS
The indicating instruments shall be analog type square shaped and shall be flush mounting type.
These shall have dust-proof and moisture- resistant enclosed cases. These shall be suitable for use
in tropical climate. All AC instruments shall be connected through suitably rated current/voltage
transformers.
3.0 BUSBARS
The busbars shall consist of tinned electrolytic copper of ample cross-sectional area, suitable for
carrying their rated continuous current without their temperature exceeding 85 Deg.C. The busbars
shall be continuous throughout each section.
The busbars shall have current rating to suit the requirements corresponding to the loads incident
thereon under the various operating conditions and shall withstand the applicable voltage and
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Volume – I Technical Specification for 415V AC Distribution Board
maximum short circuit stresses. The busbars shall be insulated from supporting structure by means
of durable non-hygroscopic, non-combustible and non-tracking polyester fiberglass material or
porcelain. Busbars shall be encased in heat-shrunk sleeves of insulating material which shall be
suitable for the operating temperature of busbars during normal service. The busbar joints shall be
provided with removable thermosetting plastic shrouds.
The busbars shall be housed in totally enclosed busbar chambers. The incoming connections from
the busbar to the various feeders shall be so designed as not to disturb cable connections and to
ensure safety to the operating and maintenance personnel and to facilitate working outside any
outgoing module without the need for switching off in-feed to the adjacent modules, as far as
possible.
A cable alley preferably 230 mm wide shall be provided in each vertical section for taking cables
into the compartments.
4.0 CONTROL WIRING
Each board shall be furnished completely factory wired upto terminal blocks ready for external
connections.
All wires shall consist of 1100 V grade PVC insulated flexible stranded copper wires with a cross2
section of 2.5 mm (min.) suitable for switchboard wiring and complying with the requirements of
the relevant IS. Each wire shall bear an identifying ferrule or tag at each end or connecting point.
Control cables for external connections shall consist of stranded copper wire with 1.5, 2.5, 4.0
sq.mm or higher cross-sectional areas and shall enter from bottom.
All interconnecting/outgoing control wiring shall terminate on stud type terminals on terminal blocks.
The terminals shall be marked with identification numbers to facilitate connections.
The terminal blocks shall be made of moulded, non-inflammable, plastic material and arranged to
provide maximum accessibility for inspection and maintenance.
The terminals shall be made of hard brass and have diameter of not less than 6 mm. The studs
shall be securely locked within the mounting base to prevent turning. The terminal blocks shall be
provided with twenty (20) percent spare terminals. The terminals shall be suitable for connections
through crimped lugs.
5.0 INDICATING LAMPS
Indicating lamps shall be of low wattage LED cluster type. The lamps shall be provided with
translucent lamp covers which shall diffuse coloured light to give the specified indications. The lamp
covers shall be unbreakable and moulded from heat-resistant fast coloured material. Necessary
wiring shall be provided accordingly.
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Volume – I Technical Specification for 415V AC Distribution Board
6.0 INCOMER
The ACDB shall have two incomer suitable as per station auxiliaries transformer rating. Each
incomer shall have electrically operated MCCB of category B with automatic changeover
arrangement. All outgoings shall be provided with MCCB/MCB of suitable rating. MCCB shall have
over current and earth fault release.
7.0 NAME PLATES & MARKING
Each panel shall be provided with legible and indelibly marked/ engraved name plates.
Name-plates of all the modules shall be white with black engraved letters.
On top of each module, name-plates with bold letters shall be provided for feeder designation. Each
device shall also be suitably marked for identification inside the panels. Name- plates with full and
clear inscriptions shall be provided inside the panels for all isolating switches, links, fuse blocks,
test blocks and cable terminals. Every switch shall be provided with a nameplate giving its function
clearly. Switches shall also have clear inscriptions for each position indication e.g. 'ON' 'OFF' etc.
8.0 DEVIATIONS
Deviation from this specification, if any, shall be clearly brought out in the offer. Unless owner
explicitly accepts such deviations, it shall be considered that the offer fully complies with the
specification.
219
Specification
Of
LT Power Cables
(Single & Multi-core)
Specification no : SP- EWLP- 01- R1
Prepared by
Name
Sign.
Hemanshi Kaul
Approved by
Name
Sign.
K.Sheshadri
220
Revision
01
Date
10, Oct’2012
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for LT Power Cable
General Specification
1.0.0 Codes & Standards :
The cables shall be designed, manufactured and tested in
Accordance with the following Indian & IEC standards.
National Standards
Indian Standards
IS- 7098 Part-1
Cross linked polyethylene insulated PVC sheathed cables (For
working voltage upto & including 1100 V)
IS- 6474
Polyethylene insulation & sheath of electric cables.
IS- 5831
PVC insulation & sheath of electric cables.
IS- 10810
Methods of test for cables.
IS- 8130
Conductors for insulated electric cables and flexible cords.
IS- 3975
Mild steel wires, formed wires and tapes for armouring of
cables.
IS- 4026
Aluminum ingots, billets and wire bars (EC grade)
IS-5484
EC Grade aluminum rod produced by continuous casting and
rolling
IEC 60228
IEC 60331
IEC 60332 - 3
IEC 60502
IEC 60754 - 1
IEC 60811
IEC 60885
IEC 60304
IEC 60227
IEC 1034
International Standards
Conductors of insulated cables. Guide to the dimensional limits
of circular conductors.
Fire resisting characteristics of electric cables.
Tests on electric cables under fire conditions. Part 3: Tests on
bunched wires or cables.
Extruded solid dielectric insulated power cables for rated
voltages from 1kV to 30 kV.
Test on gases evolved during combustion of materials from
cables. Part 1: Determination of the amount of halogen acid
gas evolved during combustion of polymeric material taken from
cables.
Common test methods for insulating and sheathing materials of
electric cables.
Electric test methods for electric cables.
Standard colours for insulation for low frequency cables and
wires.
PVC insulated cables of rated voltages up to and including
450/750 V.
Measurement of smoke density of electric cables burning under
defined conditions.
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Volume – I Technical Specification for LT Power Cable
Description of each item mentioned in the specification ( the text, BOQ, GTP or any site
specific requirement) shall be followed along with IS:7098 - P 1
2.1.1
Conductor
a) Electrolytic Grade Stranded Aluminium
conductor
b) Grade: H2 as per IS:8130/1984
c) Class 2
d) Chemical composition as per IS 4026
e) Shape :
i) Compacted Circular for sizes up to 16
sqmm and for Single core cables.
ii) Sector shaped for sizes above 25Sqmm
2.1.2
Insulation
Extruded XLPE Insulation
2.1.3
Core Identification
As per Cl.10 of IS 7098 Part-1
2.1.4
Inner Sheath
Extruded Inner Sheath of Black PVC type ST-2
(IS 5831-1984)
2.1.5
Armour
a) For 2CX10Sqmm - Galvanized Steel Wire
b) For all sizes above 10Sqmm - Galvanized
Steel Strip
c) Not applicable for Single core cables of sizes
i.e. 500 & 630 sqmm
d) Minimum area of coverage of armouring shall
be 90 %.
e) Zero negative tolerance for thickness of armour
strip.
2.1.6
Outer Sheath
a) Extruded outer sheath of PVC (ST-2). Refer note
in clause ‘c’ below for cables used in service
connection.
b) Colour : Yellow (For Multi core cables)
Black (For Single core 500 /630 Sqmm)
c) For 2CX10mm2, 2CX25mm2 & 4CX50mm2
outer sheath shall be UV resistant as these cable
are laid in air exposed to sun.
Bidder to ensure the same for these requirements
supported by required test.
d) Shape of the cable over the outer sheath shall
be circular, when manufactured /completed.
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Volume – I Technical Specification for LT Power Cable
Regular Ovality check shall be carried out at
Factory, to detect any abnormality.
Manufacturing quality shall be such that cable will
retain its circular shape, even after it is laid at site.
e) The Outer Sheath shall be embossed with
following minimum text:
e-1 : The voltage designation
e-2 : Type of construction / cable code
(for e.g. A2XFY)
e-3 : Manufacturers Name / Trade mark
e-4 : Number of Cores and nominal cross sectional
area of conductor.
e-5 : Progressive ( Sequential ) length of cable at
every meter, starting from zero for every
drum.
Color filled in for the progressive marking,
shall be with proper contrast in coloring.
e-6 : Name of buyer i.e. BSES
e-7 : Month & Year of Manufacturing
e-8: IS reference, i.e. IS:7098
e-9: P.O.No and Date
2.1.7
Sealing of Cable end
Both ends of the cable shall be sealed with PVC
Cap.
3.0.0
Testing & Inspection
Tests shall be carried out in accordance with IEC /
IS standards.
a) Routine Test
a-1 : Measurement of Electrical Resistance
a-2 : HV Test with power frequency AC voltage
b) Type Test
b-1: Cables must be of type tested quality . Type
test reports shall be submitted for the type, size &
rating of cable offered along with bid. Type test
report shall not be more than 5years old. In event
of type test being older than 5 years, bidder has to
conduct the same at CPRI/ERDA without
commercial implication to BSES.
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Volume – I Technical Specification for LT Power Cable
b-2: Bidder supplying cable to BSES for the first
time shall have to conduct type test on sample
randomly selected from lot in event of order from
CPRI / ERDA.
b-3; UV resistance test to be carried out on one
sample from ERDA / CPRI as per ASTM standard.
c) Acceptance test : Shall be conducted as per
Cl.15.2 of IS 7098 Part-1 for each lot of cable
c-1: For cable size upto 50Sqmm – one sample for
chemical composition and purity test of aluminum
shall be conducted per 100km of ordered quantity
and multiple thereof.
For cable size above 50Sqmm – one sample for
chemical composition and purity test of aluminum
shall be conducted per 50km of ordered quantity
and multiple thereof
The sample will be selected either during
acceptance test or after receipt of Cable in BSES
stores.
Cost for conducting test shall be borne by bidder..
d) Inspection
d-1 :The Buyer reserves the right to witness all
tests specified on completed cables
d-2 : The Buyer reserves the right to inspect cables
at the Sellers works at any time prior to dispatch
either in finished form or during manufacturing, to
prove compliance with the specifications.
d-3 : In-process and final inspection call intimation
shall be given in advance to purchaser/CES.
e) Test certificates: complete test certificates
(routine & acceptance tests) need to be submitted
along with the delivery of cables.
4.0.0
Drawing, Data & Manuals
4.0.1
To be submitted along with bid
The vendor has to submit:
a) Cross section drawing of cable
b) Completely filled GTP
c) Type test certificates
d) Complete cable catalogue and Manual
along with the bid.
e)Copy of BIS license
4.0.2
After award of contract
Within 7 days, the seller has to submit four sets of
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BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for LT Power Cable
above-mentioned drawings for buyer’s approval.
4.0.3
Final As Built
6 sets hardcopy + One Soft copy of all documents
including type test certificates
5.0.0
5.0.1
Drum Length & tolerance
Overall tolerance
500 +/ - 5% Mtr
5.0.2
6.0.0
Short length of cables
+/-2 % for the total cable length for the entire
order
a) Minimum acceptable short length shall be 1% of
the total ordered quantity and no length shall be
less than 250Mtrs. Manufacturer shall be required
to take prior approval from Engineering for any
short length supply. Short length will be accepted in
last lot.
b) Manufacturer shall not be allowed to put two
cable pieces of different short lengths in same
cable drum.
Packing, Shipping, Handling
& Storage
a) Drum Identification Labels
a-1 Drum identification number
a-2 Cable voltage grade
a-3 Cable code (e.g. A2XWY/A2XFY)
a-4 Number of cores and cross sectional area
a-5 Cable quantity i.e. cable length (Meters)
a-6 Purchase order number, date and SAP item
code
a-7 : Total weight of cable and drum (kg)
a-8 : Manufacturer's & Buyer’s name
a-9 : Month & Year of Manufacturing
a-10 : Direction of rotation of drum
b) Shipping information
c) Transit damage
d) Type of Drum
a-11 : Cable length final end – markings
(i.e. reading at the inner end and reading at the
outer end, just before packing, shall be marked on
the drum.)
The seller shall give complete shipping information
concerning the weight, size of each package.
The seller shall be held responsible for all transit
damage due to improper packing.
Wooden drums with anti termite treatment.
(The drums shall be with M.S. spindle plate with
nut-bolts)
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Volume – I Technical Specification for LT Power Cable
e) Cable Drum handling
The drums shall be with M.S.spindle plate ( with
nut-bolts) of adequate size to suit the spindle rods,
normally required for handling the drums,
according to expected weight of the cable drums.
7.0.0
7.0.1
Quality Assurance
Vendor quality plan
To be submitted for purchaser approval
7.0.2
Inspection points
To be mutually identified & agreed in quality plan
8.0.0
8.0.1
Progress reporting
Outline Document
To be submitted for purchaser approval for outline
of production, inspection, testing, inspection,
packing, dispatch, documentation programme
8.0.2
Detailed Progress report
To be submitted to Purchaser once a month
containing
i)
ii)
iii)
iv)
v)
vi)
vii)
9.0.0
Deviation
Progress on material procurement
Progress on fabrication (As applicable)
Progress on assembly (As applicable)
Progress on internal stage inspection
Reason for any delay in total programme
Details of test failures if any in
manufacturing stages
Progress on final box up
Constraints / Forward path
a) Deviations from this specification are only
acceptable where the Seller has listed in his
quotation the requirements he cannot, or does not,
wish to comply with and the Buyer has accepted, in
writing, the deviations before the order is placed.
b) In the absence of a list of deviations, it will be
assumed by the Buyer that the Seller complies fully
with this specification.
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Volume – I Technical Specification for LT Power Cable
Annexure – A
Scope & Project Specific Details
1.0.0
Scope
1.0.0 Scope
Design, manufacture, testing & supply of L.T.
Power cables
To be filled up as per purchase requisition.
2.0.0 Delivery Schedule
2.0.0
Document Submission
Submission of of drawings, calculations, catalogues, manuals, test reports shall be
as follows
Along with offer
For
Approval Final
after Remarks
after award of approval
contract
Drawings
2 copies
2 copies
See Clause
(Typical drgs)
Calculations
Catalogues
Type
5.0.0 for details
2 copies +
of required
(Typical)
1 soft copy in
drawings
1 copy
CD
2 copies
2 copies
Test 2 copies
Type test and
Report
sample routine
test reports
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Volume – I Technical Specification for LT Power Cable
Annexure- B
GUARANTEED TECHNICAL PARTICULARS (Multi-core)
(Standard Cable sizes are 2cx10, 2c x25, 4cx25, 4cx95 4c x50, 4c x150, 4c x 300)
For each size /rating separate GTP need to be furnished
Sr. Description
Buyer’s
requirement
Purchase Req. No.
Guarantee Period: ( Min )
1.0
2.0
A
B
3.0
Applicable IS / IEC Standard followed
by vendor
Make
Type
(as required by purchaser)
For 2CX10Sqmm
For Sizes above 10Sqmm
Voltage Grade
(KV)
4.0 Maximum Conductor temperature
A Continuous
B Short time
5.0
A
B
B
C
….
60 Months
( from date of
commissioning) / 66
Months (from date of
receipt at
purchaser’s store)
Whichever is earlier
IS 7098 Part -1
/ IEC 60502
….
A2XWY
A2XFY
1.1
90°C
250°C
Conductor
Material and Grade
Make of Al
Size
(mm2)
Min no. of wires in each conductor
Nos.
As per Cl.2.1.1
Ref Annexure E
…… sq mm
As per Manufacturer
standard
D Min Dia. of wires in each conductor
before compaction (mm)
As per Manufacturer
standard
E Shape of Conductor
F Diameter over conductor
mm
G Maximum Conductor resistance at 20
°C
(Ohm/Km)
As per Cl.2.1.1 (e)
….
As per Table 2 of IS
8130
228
Seller’s data
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for LT Power Cable
6.0 Insulation
A Insulation Material
As per Cl. 2.1.2
B Nominal thickness (mm)
C Diameter over Insulation (mm) Approx.
D Make of insulation compound
7.0 Inner Sheath
A Material and Type
B Minimum thickness
….
8.0 Galvanized Steel Armour
As per
Manufacturer’s
standard and as per
purchaser’s site –
specific conditions
A Material
a) For 2CX10Sqmm
Wire Dia (mm)
No of wires
G.I.Wire
1.4+/-0.040
As per manufacturer
standard
G.I.Strip
4x0.8
(zero negative
tolerance for
thickness)
As per manufacturer
standard
Min 90% and
calculations shall be
strictly as per
Annexure C
….
b) For sizes above 10Sqmm
Strip size ( Width and
Thickness )
No of Strips
Area covered by Armour
C
Dia. over Armour – Approx.
Ref: Annexure E
As per Cl. 2.1.4
As per Table 5 of
IS7098 Part-1
C Approx. dia. Over sheath (mm)
B
As per Table 3 of IS
7098 Part-1
9.0 Outer Sheath
A Material and Type
As per Cl. 2.1.6
B Minimum Thickness
As per Table 8 of
IS7098 Part-1
C Colour
Yellow
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BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for LT Power Cable
D
Embossing Details
10.0
Approx. overall dia.
As per Cl.2.1.6 (e)
(mm)
….
11.0 Overall order tolerance
+/-2 % for the total
cable length for
the entire order
12.0 Cable Drum
A Type of Drum
B Drum Length & tolerance
C Marking on Drum
D Drums provide with MS Spindle plate &
Nut bolts arrangement
13.0 End Cap
14.0 Weights
a) Net Weight of cable ( Kg/Km. ) –
Approx.
b) Weight of empty drum
c) Weight of cable with drum
15.0 Continuous current rating for standard
I.S. condition laid Direct
a) In ground 30° C
b) In duct 30° C
c) In Air
40° C
16.0 Short circuit current for 1 sec of
conductor. (KAmp)
Wooden
As per Spec.Cl.
5.0.0 & 5.0.1
As per Spec.Cl.
6.0.0
Required
Required
….
Kg
Kg
Amps
Amps
Amps
….
17.0 Electrical Parameters at Maximum
Operating temperature:
A AC Resistance
B Reactance at 50 C/s
C Impedance
D Capacitance
Ohm/Km
Ohm/Km
Ohm/Km
Micro farad / KM
18.0 Recommended minimum bending
radius
…. x O/D
19.0 Derating factor for following Ambient
Temperature in
a) At 30° C
b) At 35° C
c) At 40° C
d) At 45° C
230
Ground / Air
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for LT Power Cable
e) At 50° C
20.0 Group factor for following Nos. of
cables laid
i) 3 Nos.
ii) 4 Nos.
Iii) 5 Nos.
iv) 6 Nos.
21.0 Process of Cross linking of
Polyethylene
22.0 Type test
Touching Trefoil
Dry cure
Is copy of latest
valid TTR for
respective sizes
enclosed?
Yes / No
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Volume – I Technical Specification for LT Power Cable
Annexure – C
ARMOUR COVERAGE PERCENTAGE
πxD
a
C = Lay
Percent coverage =
Nxd
x 100
W
Where
N = number of parallel wires / Strips
d = diameter of wire / width of formed wires
W = π x D x Cos a,
D = diameter under armour
a = angle between armouring wire / formed wires and axis of cable
tan a = π x D/C, and
C = lay length of armouring wires / formed wires.
Min 90% armour coverage shall be provided both in case of wires and strips.
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Volume – I Technical Specification for LT Power Cable
Annexure- D
GUARANTEED TECHNICAL PARTICULARS (Single Core)
(Separate GTP needs to be furnished for 500 & 630 sq mm cables)
Sr. Description
Buyer’s
requirement
Purchase Req. No.
Guarantee Period: ( Min )
Applicable IS / IEC Standard followed
by vendor
1.0 Make
2.0 Type
3.0 Voltage Grade
(KV)
60 Months
( from date of
commissioning) / 66
Months (from date of
receipt at
purchaser’s store)
Whichever is earlier
IS 7098 Part -1
/ IEC 60502
A2XY (Unarmoured)
1.1 KV
4.0 Maximum Conductor temperature
A Continuous
B Short time
5.0
A
B
C
D
D
E
F
G
90°C
250°C
Conductor
Material and Grade
Size
(mm2)
Min no. of wires in each conductor
Nos.
Min dia. of wires in each conductor
before compaction (mm)
Shape of conductor
Diameter over conductor
mm
Maximum Conductor resistance at 20°
C (Ohm/Km)
Make of Al
6.0 Insulation
A Insulation Material
B Nominal thickness
i)
For 1cx500Sqmm
ii)
For 1cx630Sqmm
C Diameter over Insulation (mm) Approx.
233
As per Cl.2.1.1
500 / 630 sq mm
As per Manufacturer
standard
As per Manufacturer
standard
Compacted Circular
-As per Table 2 of IS
8130
Ref Annexure E
As per Table 3 of IS
7098 Part-1
As per Cl. 2.1.2
2.2mm
2.4mm
Seller’s data
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for LT Power Cable
D Make of insulation compound
Ref: Annexure E
7.0 Inner Sheath
Not applicable
8.0 Armour
Not applicable
9.0 Outer Sheath
A
Material and Type
B
Minimum Thickness
C
D
Colour
Embossing Details
Approx. overall dia.
As per Cl. 2.1.6
As per Table 8 of
IS7098 Part-1
Black
As per Cl.2.1.6 (e)
(mm)
….
10.0
11.0 Overall order tolerance
+/-2 % for the total
cable length for
the entire order
12.0 Cable Drum
A Type of Drum
B Drum Length & tolerance
C Marking on Drum
D Drums provide with MS Spindle plate &
Nut bolts arrangement
13.0 End Cap
14.0 Weights
a) Net Weight of cable ( Kg/Km. ) –
Approx.
b) Weight of empty drum
c) Weight of cable with drum
15.0 Continuous current rating for standard
I.S. condition laid Direct
a) In ground 30° C
b) In duct 30° C
c) In Air
40° C
16.0 Short circuit current for 1 sec of
conductor. (KAmp)
Wooden
As per
Spec.Cl.5.0.0 &
5.0.1
As per Spec.Cl.
6.0.0
Required
Required
….
Kg
Kg
Amps
Amps
Amps
….
17.0 Electrical Parameters at Maximum
Operating temperature:
A AC Resistance
Ohm/Km
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BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for LT Power Cable
B Reactance at 50 C/s
C Impedance
D Capacitance
Ohm/Km
Ohm/Km
Micro farad / KM
18.0 Recommended minimum bending
radius
…. x O/D
19.0 Derating factor for following Ambient
Temperature in
a) At 30° C
b) At 35° C
c) At 40° C
d) At 45° C
e) At 50° C
20.0 Group factor for following Nos. of
cables laid
i) 3 Nos.
ii) 4 Nos.
Iii) 5 Nos.
iv) 6 Nos.
21.0 Process of Cross linking of
Polyethylene
22.0 Type test
235
Ground / Air
Touching Trefoil
Dry cure
Is copy of latest
valid TTR for
respective sizes
enclosed?
Yes / No
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for LT Power Cable
Annexure E
List of Sub‐Vendors
For critical items
S.No.
Description of Material
Sub-Vendors
E.C.Grade Aluminum Rod
Bharat Aluminum Co.Ltd ( BALCO)
Hindustan Aluminum Co.Ltd ( HINDALCO)
National Aluminum Co.Ltd ( NALCO )
Kalpena Industries Ltd.
KLJ Polymers and Chemicals Ltd.
Dow Chemical. U.S.A.
Borealis. Sweden.
Hanwha, Seoul, South Korea.
01
XLPE Compound
02
236
Specification
Of
Control Cables
Specification no : SP-EWLP-01-R2
Prepared by
Name
Sign.
Hemanshi Kaul
Approved by
Name
Sign.
Kiran Kumar Alla
237
Revision
01
Date
27, Jan’2014
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for Control Cable
General Specification
1.0.0 Codes & Standards :
The cables shall be designed, manufactured and tested in
Accordance with the following Indian & IEC standards.
National Standards
Indian Standards
IS- 1554 Part-1
PVC insulated Cables
IS- 5831 : 1984
PVC insulation & sheath of electric cables.
IS- 10810 : 1984
Methods of test for cables.
IS- 8130 : 1984
Conductors for insulated electric cables and flexible cords.
IS- 3975 : 1999
Mild steel wires, formed wires and tapes for armouring of
cables.
International Standards
IEC 60228 Ed.3.0 b
Conductors of insulated cables.
IEC 60332-3-21 Ed.1.0 b
Tests on electric cables under fire conditions. Part 3-21. Tests
on bunched wires or cables.
Power cables with extruded insulation and their accessories for
rated voltage from 1kV upto 30kV –Part 1: cables for rated
voltages of 1kV and 3kV
Common test methods for insulating and sheathing materials of
electric cables.
Electric test methods for electric cables.
PVC insulated cables of rated voltages up to and including
450/750 V.
International Standard of Resistance for Copper
IEC 60502-1 Ed. 2.1 b
IEC 60811
IEC 60885 Ed.1.0 b
IEC 60227
IEC 60028 Ed. 2.0 b
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2.0.0
Cable construction Features
2.1.1
Conductor
Size & dimensions of each item mentioned under
this clause shall be followed as detailed out in
GTP, refer Annexure B
Stranded, plain copper, circular
Shall be made from high conductivity copper rods
2.1.2
Insulation
Extruded PVC Insulation Type A as per IS 5831
2.1.3
Core Identification
Each core shall have different color of insulation.
2.1.4
Inner Sheath
Extruded Inner Sheath of Black PVC type ST-2
as per IS 5831
2.1.5
Armour
a) As per Cl 13.2 of IS 1554 Part-1: Galvanized
steel round wire armour.
b) Minimum area of coverage of armouring shall
be 90 %.
2.1.6
Outer Sheath
a) Extruded outer sheath of PVC type ST-2 as per
IS 5831
b) Colour : Black
d) The Outer Sheath shall be embossed with:
d-1 : The voltage designation
d-2 : Type of construction / cable code (for e.g.
AYWY)
d-3 : Manufacturers Name or Trade mark
d-4 : Number of Cores and nominal cross sectional
area of conductors
d-5 : The drum progressive length of cable at
every metre.
d-6 : Name of buyer i.e. BSES
d-7 : Month & Year of Manufacturing
d-8: P.O.No. and P.O.Date
2.1.7
Sealing of Cable end
Both ends of the cable shall be sealed with PVC
Cap.
4.0.0
Testing & Inspection
Tests shall be carried out in accordance with IEC /
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Volume – I Technical Specification for Control Cable
IS standards.
a) Routine Test: As per IS 1554 part -1
b) Type Test
b-1: Cables must be of type tested quality .
Type test reports shall be submitted for the type,
size & rating of cable offered along with bid.
b-2 : If the manufacturer’s lab is accredited by
govt. /authorised body then it shall be acceptable
for type testing.
b-3 : Type test on one cable drum of each rating
and type , from first lot, shall be conducted at Govt.
approved / Internationally accredited labs.
c) Acceptance test : Shall be conducted as per IS
1554 Part-1 for each lot of cable
c1) A minimum of two samples per Purchase order
shall be drawn after receipt of cable in BSES
stores for chemical composition and purity test of
aluminium. Bidder to bear cost of test.
d) Inspection
d-1 :The Buyer reserves the right to witness all
tests specified on completed cables
d-2 : The Buyer reserves the right to inspect
cables at the Sellers works at any time prior to
dispatch, to prove compliance with the
specifications.
d-3 : In-process and final inspection call intimation
shall be given in advance to purchaser.
e) Test certificates: Three sets of complete test
certificates (routine & acceptance tests) need to be
submitted along with the delivery of cables.
5.0.0
Drawing, Data & Manuals
5.0.1
To be submitted along with bid
The seller has to submit:
a) Cross section drawing of cable
b) Completely filled GTP
c) Type test certificates
d) Complete cable catalogue and Manual
along with the bid.
5.0.2
After award of contract
Within 15 days, the seller has to submit four sets
of above-mentioned drawings for buyer’s approval.
5.0.3
Final As Built
6 sets hardcopy + One Soft copy of all documents
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including type test certificates
6.0.0
6.0.1
Drum Length & tolerance
Overall tolerance in cable
Length
6.0.2
Short length of cables
500+ - 5% Mtr.
-2%
a) Minimum acceptable short length shall be above
100 Mtrs. Manufacturer shall be required to take
prior approval from Engineering for any short
length supply.
b) Manufacturer shall not be allowed to put two
cable pieces of different short lengths in same
cable drum.
c) Only 1% of the total ordered quantity.
7.0.0
Packing, Shipping, Handling
& Storage
a) Drum Identification Labels
a-1 Drum identification number
a-2 Cable voltage grade
a-3 Cable code (e.g. YWY)
a-4 Number of cores and cross sectional area
a-5 Cable quantity (Metres)
a-6 Purchase order number and SAP item code
a-7 : Total weight of cable and drum (kg)
a-8 : Manufacturer's & Buyer’s name
a-9 : Month & Year of Manufacturing
a-10 : Direction of rotation of drum
b) Shipping information
c) Transit damage
d) Type of Drum
a-11 : Cable length initial reading & end reading
shall be marked on drum. Cable starting end shall
be taken out from winding to read this drum
reading with proper sealing to protect against
external damage.
The seller shall give complete shipping information
concerning the weight, size of each package.
The seller shall be held responsible for all transit
damage due to improper packing.
Wooden drums with anti termite treatment.
(The drums shall be with M.S. spindle plate with
nut-bolts)
8.0.0
8.0.1
Quality Assurance
Vendor quality plan
To be submitted for purchaser approval
8.0.2
Inspection points
To be mutually identified & agreed in quality plan
9.0.0
Progress reporting
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9.0.1
Outline Document
To be submitted for purchaser approval for outline
of production, inspection, testing, inspection,
packing, dispatch, documentation programme
9.0.2
Detailed Progress report
To be submitted to Purchaser once a month
containing
i)
ii)
iii)
iv)
v)
vi)
vii)
10.0.0 Deviation
Progress on material procurement
Progress on fabrication (As applicable)
Progress on assembly (As applicable)
Progress on internal stage inspection
Reason for any delay in total programme
Details of test failures if any in
manufacturing stages
Progress on final box up
Constraints / Forward path
a) Deviations from this specification are only
acceptable where the Seller has listed in his
quotation the requirements he cannot, or does not,
wish to comply with and the Buyer has accepted,
in writing, the deviations before the order is placed.
b) In the absence of a list of deviations, it will be
assumed by the Buyer that the Seller complies
fully with this specification.
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Annexure – A
Scope & Project Specific Details
1.0.0
Scope
1.0.0 Scope
Design, manufacture, testing & supply of Control
cables
To be filled up as per purchase requisition.
2.0.0 Delivery Schedule
2.0.0
Document Submission
Submission of of drawings, calculations, catalogues, manuals, test reports shall be
as follows
Along with offer
For
Approval Final
after Remarks
after award of approval
contract
Drawings
2 copies
2 copies
See Clause
(Typical drgs)
Calculations
Catalogues
Type
5.0.0 for details
2 copies +
of required
(Typical)
1 soft copy in
drawings
1 copy
CD
2 copies
2 copies
Test 2 copies
Type test and
Report
sample routine
test reports
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Volume – I Technical Specification for Control Cable
Annexure- B
GUARANTEED TECHNICAL PARTICULARS
(Standard Cable sizes are 6c x 2.5, 8c x 2.5, 10c x 2.5 Sqmm)
For each size separate GTP need to be furnished
Sr. Description
Buyer’s
requirement
Purchase Req. No.
Guarantee Period: 5 Years
1.0 Make
2.0 Type
)
….
60/66 Months
….
YWY
( AS PER IS 1554 part -1
3.0 Voltage Grade
(KV)
1.1
4.0 Maximum Conductor temperature
A Continuous (° C)
B Short time (° C)
70°C
160°C
5.0 Conductor
A Size
(mm2)
B No. of wires in each conductor
Nos.
C Dia. of wires in each conductor
before compaction (mm)
D Shape of Conductor
E Diameter over conductor
mm
F Maximum Conductor resistance at
20 ° C
(Ohm/Km)
6.0 Insulation
A Nominal thickness
(mm)
2.5 / 4 sq
mm
As per
Manufacturer
standard
As per
Manufacturer
standard
As per Cl.2.1.1
of specification
….
As per Table 2
of IS 8130
As per Table 1
of IS:5831 –
1984
As per Cl.2.1.2
244
Seller’s data
For
6Cx2.5sqmm
Seller’s data
For
10Cx2.5sqmm
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Volume – I Technical Specification for Control Cable
B Minimum thickness (mm)
C Core Identification
D Diameter over Insulation (mm)
Approx.
7.0 Inner Sheath
of specification
& Table 2 of IS
1554( Part-1)
Color of all the
cores shall be
different
….
As per Table 2
of IS:5831 –
1984
A Minimum thickness (mm)
B Approx. dia. Over sheath (mm)Apprx.
As per Table 4
of IS 1554(
Part-1)
….
8.0 Galvanised Steel Armour
As per Cl 2.1.5
of specification
A Number of armour wire
As per
Manufacturer
Std.
As per Table 5
of IS 1554(
Part-1)
….
….
B Nominal Dia of Round Wire
C Dia. over Armour – Approx.
D Lay Ratio
E Confirm minimum 90% coverage
(submit calculation)
9.0 Outer Sheath
As per Table 2
of IS:5831 –
1984
A Thickness (Minimum)
As per Table 7
of IS 1554(
Part-1)
Black
B Colour
10.0 Approx. overall dia.
(mm)
11.0 Drum Length & tolerance
….
As per
Spec.Cl. 6.0.0
12.0 End Cap
13.0 Drums provide with MS Spindle
plate & Nut bolts arrangement
Required
Required
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14.0 Net Weight of cable ( Kg/Km. ) –
Approx.
….
15.0 Continuous current rating for
standard I.S. condition laid Direct
a) In ground 30° C
Amps
b) In duct 30° C
Amps
c) In Air
40° C
Amps
….
….
….
16.0 Short circuit current for 1 sec of
conductor. (KAmp)
….
17.0 Electrical Parameters at Maximum
Operating temperature:
A Resistance ( Ohm/Km ) (AC
Resistance)
B Reactance at 50 C/s ( Ohm/Km )
C Impedance ( Ohm/Km )
D Capacitance (Micro farad / KM)
….
….
….
….
18.0 Recommended minimum bending
radius
…. x O/D
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NEW GRID
TECHNICAL SPECIFICATION
FOR
SCADA INTERFACE WORK & AUTOMATION
Prepared by
Reviewed &
Approved by
K A SENTIL
KUMARAN
Rev: 3
Date: 09-03-2015
ANAND KUMAR
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1.0 INTENT OF SPECIFICATION:
This specification is intended to cover the supply and execute work related to interface of all
electrical equipments with RTU panel complete with all materials and accessories for efficient
and trouble free operation. In the event of any discrepancy with the listed documents, the
stipulation of this specification shall govern.
2.0 SCOPE OF WORK
For substation, it is proposed to lay and terminate panel wirings / control cables if any
between the outdoor equipments such as CT, PT, Circuit Breaker, Isolators, 11 KV
Switchgear, Power Transformer & its sensors – OTI, WTI, TPI, AVR, etc, REGDA relay,
Capacitor Bank, and Battery Charger.
Laying of Communication cables through conduit/PVC pipe between Bay Control Units &
Remote Terminal Units, IEDs and MFMs and Communication Routers.
The scope of work under this category would include:
1. Installation, Testing and Commissioning of Bay Control units (BCU) & Data
Concentrator Units (DCU) / Remote Terminal Units(RTUs) & Ethernet Fiber Switch
with necessary License (Basic + PLC License).
2. Laying and termination of communication cables / RS 485 through conduit pipe
between relays, MFMs, BCU and RTU.
3. Supply, Installation, Testing and commissioning should be in SCADA vendor’s scope.
4. Laying of Communication cable (Ethernet or Fiber optic) between relay to switch and
switch to RTU should be SCADA vendor’s Scope.
5. Laying of control cables between control & Relay panel and RTU for hard wire
signals.
6. Installation of cable trays and accessories as required for the cabling work.
7. Preparation of cable schedule, wiring diagrams and interconnection drawings.
8. Separate/dedicated earthing bars to be provided for RTU and it will be directly
connected to grid earthing.
9. All wiring between BCU and C&R Panel terminals will be in SCADA Vendor’s scope.
10. IED Integration with numerical relays/ MFMs should be in SCADA vendor’s scope.
11. Hardware & software integration of RTU, BCUs along with other equipments viz.
Battery Chargers, Multi Function Meters, Fire Fighting System Signals, Transformer
relays (for OTI, WTI, TPI, AVR, etc.), Numerical Relays, 11&33&66KV Control and
Relay panel signals etc. should be in Vendor’s scope.
2.1
Cables
The following types of cables / wirings will be required for extending signals/ commands
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2.5 mm2, multi strained flexible copper wire, FRLS 1.1KV HRPVC for AC & DC
Supply & 1.5 mm2 multi strand cables for other internal wiring for RTU.
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ƒ
Fiber Optic Cables (GLASS&PLASTIC Types) & RS485 cables with conduit pipe or
Armored RS485 Cables for IED Integration.
ƒ 2 C X 2.5 MM2 cables for external AC / DC Power Supply
ƒ 20C x 1.5 mm2 for DI
ƒ 5C X 1.5 mm2 for DO
ƒ 2P X 0.5 mm2 Screened Armored PVC cable for external (RTU to BCUs
/MFM/BATT.CHG/Transformer Monitoring Devices) RS 485 connections.
The supplied cable shall be as a latest IS, also refer control cable specification.
™ Cable Gland
Single Compression cable glands (PVC for RS 485 cables & Brass for Control Cables) of
different sizes for cable entry into the DAU & DCU Panels
™ Cable Trays and NS cable Support
Perforated / ladder type (galvanized) for laying the cables.
2.2
Multifunction Meters (Accuracy – 0.5)
To extend the current / voltage / active and reactive power, power factor, etc. to RTU, MFMs,
installed in the C & R panel, should be integrated. (Make: RISHABH or Equivalent with
MODBUS). The outputs of these meters (in groups of 5) connections should be made using
twisted pair screened cable (Typically 22gauge Belden 8761 or equivalent) & two wires (A
and B) connections are daisy chained together and integrated with RTUs. All hardware’s or
protocol converters for having IEC 61850 Protocol output should be in Vendor’s scope.
These should be installed in C & R Panel individually for each feeder/ breakers. All CT & PT
wirings to MFMs and its Configuration should be in Vendor‘s scope.
For the protection of MFMs and RTU cards against Surges and electrical leakages, it is
recommended to install Surge Protection Devices in RTU or C&R Panel and placed in
between RTU & MFM serial loops. The typical diagram for this connection is mentioned in the
System Architecture diagram. (5 MFMs per loop with SPD)
The following signals are to be taken from MFMs to existing RTU.
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Three phase voltage & Three Phase Current
Active Power & Reactive Power
Maximum Demand (KW) & Frequency
Power factor & THD
Neutral Current.
[[
2.3
Numerical Relays with Bay Control Units
Numerical Relays & Bay Control Units should be integrated with Remote Terminal Units. All
hardware’s and protocol converters if required for compatibility with SCADA shall be in
Vendor’s scope.
The respective BCUs of individual Relays/Breakers will be serially connected to Data
concentrator Unit/Remote Terminal Units through IEC 61850.
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The following signals are to be taken from Numerical Relays to the BCUs through internal
hard wiring. This list is indicative and signals should not be limited to this. Additional signals
can be taken based on this. – Refer Para 2.8 for detail signals list with data types.
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2.4
Online Currents / Voltage & Relay General trip signal
Post fault currents (R, Y, B phase separately) & Relay Internal Fault
Distance to Fault (in case of distance relays - R, Y, B Phase separately)
Unbalance Current (in case of neutral displacement relay of capacitor feeders).
Transformer Signal
OTI, WTI, TPI, AVR and Transformer auxiliary protection signals should be integrated with an
RTU through serial communication (RS 485 cables) via TMD (REGDA, A-EBERLE relays)
having IEC 61850 Protocol output.
All field installations of these sensors and its wiring/cabling and configuration along with
hardware’s or protocol converters, if any, should be in Contractor‘s scope. - Refer Para 2.8
for detail Transformer & Transformer Monitoring Device signal’s list with data types.
2.5
Battery Charger
All signals of Battery Chargers should have IEC 61850/ IEC 60870-5-103 / MODBUS
Protocol output and integrated with an RTU through serial communication (RS 485) cables.
Laying communication cables through conduit pipe and battery charger signals (Soft & Hard
Signals) integration with an RTU shall be in Vendor’s Scope. - Refer Para 2.8 for detail
Battery Charger signal's list with data types.
2.6
Bay Control Units & Remote Terminal Units
For extending the signals from the grid to the Master Control Centre/ Backup Control Centre,
BCUs and RTUs are to be installed. BCUs needs to be initially physically integrated with
Numerical relays of respective breakers to enable soft signals and commands for breakers to
be configured there and serially integrated with Remote Terminal Units through protocol IEC
– 61850. However the options for IEC-60870-103 protocol along with the MODBUS protocol
option is required BCUs can be of ABB, Siemens, Areva, etc ., make depending on the type/
make of switch gears. Remote Terminal Units need to be installed for interface between
the BCUs and Control Centers (Main and Backup) through IEC – 60870 – 104 Protocol.
The size of RTU will depend on the size of the substation, no. of the feeders/ number of
signals and command outputs along with sufficient spares (20%) for future requirement.
All associated equipments and accessories including software &Operating tool / multiple user
licenses for RTU & BCU, MCBs for DC and AC Supply, DC to DC Converter (in case station
battery voltage level is 220 volts DC), etc. should be in Vendor’s scope.
Hardware & software integration of RTUs, BCU along with other equipments viz. Battery
Chargers, Multi Function Meters, Fire Fighting Systems, Signals, Transformer relays (for OTI,
WTI, TPI, AVR, etc.), Numerical Relays, etc. should be in Vendor’s scope.
RTU Features & Performance capabilities
2.6.1 RTU Size and Expandability
20% Spare for RTU - Provision for 20 % (Basic +20% Spare) of the total DI / DO signals
(hard/soft) as a spare should be made available for future requirement.
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10% Spare for BCU - Each Control and Relay panel BCU must have 10% (Basic + 10%
Spare) of the particular bay DI/DO signals as spare should be available.
Panel Size & Hardware Capacity - The RTU panel sizing should be capable of
accommodating additional 50% of the basic I/O counts by way of addition of hardware such
as modules, racks, panels, Terminal Blocks of basic I/O counts.
Software Capacity - The RTU software and database generation should be sized to
accommodate for additional 50% of the basic I/O count without requiring software or
database regeneration or License.
2.6.2 Remote database, downloading of RTU from master station/SCADA control center.
2.6.3 RTU shall have the capability of automatic start-up and initialization following restoration of
power after an outage without the need for manual intervention. All restarts shall be reported
to the connected master stations.
2.6.4 Act as a data concentrator on IEC60870-5-101/104/MODBUS/IEC 61850 protocols and
Support for IEC 60870-5-103, IEC 60870-5-101, IEC 61850/MODBUS protocols & ability to
act as a gateway for Numerical relays.
2.6.5 Security
As the SCADA system will use public domain, such LAN/VSAT/GPRS/CDMA etc. therefore it
is mandatory to guard the data/ equipment from intrusion/damage/breach of security & shall
have SSL/VPN based security.
2.6.6 Internal battery backup to hold data in SOE buffer memory & also maintaining the time &
date.
2.6.7 RTU must have the capability of time synchronization with a GPS receiver and the GPS at
the control room will be used for this synchronization purpose. In case of failure of the GPS
receiver, the RTUs time synchronization should be through the Master’s SCADA clock.
2.6.8 The RTU must have inbuilt GPS & internal real time clock to synchronize the IEDs connected
to it over their respective protocol.
2.6.9 CPU/RTU Hardware (ETH Port) Redundancy for MCC & BCC
Main processor (DCU) /RTU should have adequate capacity for data handling / processing
and main processor/CPU must have required number of communication ports for
simultaneous communication with Master Stations (MCC & BCC), /MFTs and RTU
configuration & maintenance tool.
2.6.10 CPU/RTU Soft Configuration Future (Communicate to multiple master stations
simultaneously on IEC60870-5-104.)
RTU/DAU must have multiple location data transmission facility VAZ Master Control Centre,
Backup Control Centre, etc.
2.6.11 Diagnostic Software & Multi user tool/License for RTU/(Numerical Relay) BCU Diagnostic Software shall be provided to continuously monitor the operation of the RTU and
report RTU hardware errors to the connected master stations. The software shall check for
memory, processor, and input/output ports errors and failures of other functional areas
defined in the specification of the RTU. If any system connected to RTU for download/
Upload files can be stored as a log in RTU.
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2.6.12 RTU Panels
At least 50% of the space inside each enclosure shall be unused (spare) space that shall be
reserved for future use. The Contractor shall provide required panels conforming to IEC 529
for housing the RTU modules/racks, relays etc. and other required hardware. The panels
shall meet the following requirements:
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Shall be free standing, floor mounted and height shall not exceed 2200 mm.
All doors and removable panels shall be fitted with long life rubber beading.
All non load bearing panels/doors ,top and bottom portion, rear cover shall be fabricated
from minimum 2.0 mm thickness steel sheet and all load bearing panels, frames, top &
bottom panels shall be fabricated from minimum 3.0 mm thickness steel sheet.
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Shall have maintenance access to the hardware and wiring through lockable full height
doors.
Shall have the provisions for bottom cable entry.
All panels shall be supplied with 230V AC, 50 Hz, single-phase switch and 15/5A duplex
socket arrangement for the maintenance.
All panels shall be provided with an internal maintenance lamp, space heaters and gaskets.
All panels shall be indoor, dust-proof with rodent protection, and meet IP54 class of Ingress
protection.
There shall be no sharp corners or edges. All edges shall be rounded to prevent injury.
Document Holder shall be provided inside the cabinet to keep test report, drawing,
maintenance register etc.
All materials used in the enclosures including cable insulation or sheathing, wire troughs,
terminal blocks, and enclosure trims shall be made of flame retardant material and shall not
produce toxic gases under fire conditions.
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2.6.13 RTU Grounding
The safety ground shall be isolated from the signal ground and shall be connected to the
ground network. Safety ground shall be a copper bus bar. The contractor shall connect the
panel’s safety ground to the grid grounding network. Separate grounding is created for
communication equipments and Signal ground shall be connected to the communication
equipment signal ground.
2.7
Ethernet Fiber Switch
The Ethernet Fiber switches are intended to be installed in the control room and shall be
complaining to IEC-61850 electrical substation networks and IEEE 1613 standards.
Provisions for additional feeders on the Ring Configuration should be provided on the same
switch.
Laying of Ethernet/Fiber cables for relay/BCU port to the RTU via switch through conduit pipe
and integration with an RTU shall be in Vendor’s Scope.
Switch, Standard Features
Switch design should withstand for power substation automation applications that operate in
extremely harsh environments (High and medium voltage S/Stn environments) and it also
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withstands vibration, electrical surges, fast transients, electrostatic discharge, and extreme
temperatures and humidity.
Switch features and configuration should be easy to user interface and it must directly
integrate with any other IEC-61850 devices.
The FO switch shall support Multimode fiber and single mode fiber in 10/100Mbps and 1000
Mbps ports on an SFP (simple form factor pluggable), for ease of functionality and
maintenance.
Hot Standby/Dual PSU & Redundancy in power source - Possibility to increase the switch
availability by having a second power source in case the first one fails & should be available
with 48VDC.Each PSU should be connected with a different power source, if any one power
source or Power supply card fails the other one should keep the switch continuous operation.
Link Failure contact alarm - Failure contact alarm shall be achieved by hardware contact
that is activated when a link problem occurs.
Logs and alarms with Time Stamp - Statistics about link status alarms are to be stored with
the accurate timestamp duly tracing all events.
Advanced security features - The FO switches shall support different user levels with
different passwords, including
the facility to work with different VLANs, following the
802.1Q standard, port security based on MAC addresses, possibility to disable unused ports,
authentication protocols shall be provided.
High Speed Implementation of RSTP protocol - The FO switches shall support STP and
RSTP protocols, and shall facilitate for recovery and the fault recovery times shall be within 5
-10msec per switch, always fulfilling the RST protocol.
Time Synchronization to RTU/Server and Connected IED/BCU - The FO switch shall
have an internal clock and shall be synchronized from a network SNTP/NTP server, so all
time stamped events shall be with a reliable time reference.
Tools with License - Diagnostics tool, other necessary tools with a multi user license to be
provided along with the switch.
Mounting Options - Switch should be DIN Rail Mountable & also need to quote for Optional
Wall/Rack Mountable kit.
Local USB port for emergency boot is Mandatory.
Network based distributed security by having a firewall on each port of the switch for all the
standard Industrial protocols like MODBUS, IEC-101, IEC-104, DNP3, IEC-103, IEC-61850
should be available.
The FO switch shall have the facility of Port mirroring and the user shall configure one port to
replicate traffic flows of different ports, so the system administrator can monitor the incoming,
outgoing, or all kinds of traffic that is going through the ports under study.
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ITU-T G.8032 support for Ethernet Ring redundancy, ensuring fast failure detection is
preferred.
They FO switches shall sustain the stringent levels in temperature range and
electromagnetic immunity defined in the 61850-3, but also the advanced functional
requirements defined for operation with other IEC-61850 devices. The Switch should be
certified on IEC-61850, functional & Environmental specifications by KEMA.
The FO switches shall have advanced security features to be implemented to avoid
unauthorized access to the system Such as RADIUS/TACACS & VPN gateway support with
IP Sec & SSH.
2.8 SIGNAL LIST (11/33/66KV)
List of Abbreviations AI ‐ Analog Input/Analog Values MV ‐ Measured Value MFM ‐ Multi Function Meter DCO ‐ Double Command Output DPI ‐ Double Point Indication SCO ‐ Single Command Output SPI ‐ Single Point Indication RTU ‐ Remote Terminal Units BCU ‐ Bay Control Units Breaker ON/OFF Trip Ckt Healthy Spring Charge Breaker in service/Test Auto Trip(86) Operated Panel DC Fail L/R Switch in Local/Remote Relay Int Fault. Over Current Operated Earth Fault Operated BKR CLS/OPN COMMAND Auto‐Trip(86) relay resets from Remote 3Phase R,Y,B ‐ Current & Voltage,Active Power,Reactive Power,Power Factor,Max.Demand,Neu.Current Digital Input/AI, soft through N.Relay/BCU √ √ √ √ √ Digital Out Put soft through N.Relay/BCU √ √ √ √ √ √ Digital Input/Output Hard Wire to RTU √ √ Signal Type DPI SPI SPI DPI SPI SPI DPI SPI SPI SPI DCO SCO AI/MV 254
N.Relay
Protocol IEC‐61850 Signals ‐ 11KV Out Going Feeders BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for SCADA interface work & Automation
Fault Current Levels/Disturbance Record/ If Any Fault Graphs for Remote √ Digital Out Put soft through N.Relay/BCU Digital Input/Output Hard Wire to RTU Signal Type DPI SPI SPI DPI SPI SPI SPI SPI DPI diagnosis purpose.* Breaker ON/OFF Trip Ckt Healthy Spring Charge Breaker in service/Test Auto Trip(86) Operated VT fuse Blown ‐ Metering. VT fuse Blown ‐ Protection Panel DC Fail L/R Switch in Local/Remote Digital Input/AI,soft through N.Relay/BCU √ √ √ √ √ √ √ √ Relay Int Fault. Over Current Operated Earth Fault Operated Under Voltage Prot.Operated Over Voltage Prot.Operated REF Operated BKR CLS/OPN COMMAND Auto‐Trip(86) relay resets from Remote 3Phase R,Y,B ‐ Current & Voltage,Active Power,Reactive Power,Power Factor,Max.Demand,Neu.Current Fault Current Levels/Disturbance Record/ If Any Fault Graphs for Remote √ √ √ √ √ √ √ √ √ Breaker ON/OFF Trip Ckt Healthy Spring Charge Breaker in service/Test Auto Trip(86) Operated Panel DC Fail L/R Switch in Local/Remote Relay Int Fault. PT MCB ‐ Met&protection operated Over Current Operated Earth Fault Operated BKR CLS/OPN SPI SPI SPI SPI SPI SPI DCO SCO √ AI/MV √ diagnosis purpose.* Signals ‐ 11KV Bus Coupler N.Relay
Protocol IEC‐61850 Signals ‐ 11KV Incomers AI AI Digital Input/AI, soft through N.Relay/BCU √ √ √ √ √ √ √ √ √ 255
Digital Out Put soft through N.Relay/BCU √ Digital Input/Output Hard Wire to RTU √ √ Signal Type DPI SPI SPI DPI SPI SPI DPI SPI SPI SPI DCO N.Relay
Protocol IEC‐61850 BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for SCADA interface work & Automation
Fault Current Levels/Disturbance Record/ If Any Fault Graphs for Remote √ diagnosis purpose.* √ Digital Out Put soft through N.Relay/BCU √ √ √ Digital Input/Output Hard Wire to RTU √ √ Breaker ON/OFF Front Bus (89A) ISO ON/OFF (In‐Case of O/D) Rear Bus (89B) ISO ON/OFF (In‐Case of O/D) LINE ISO (89L) ON/OFF (In‐Case of O/D) Earth Switch (89LE) ‐1&2 On/OFF (In‐Case of O/D) Breaker in service/Test (In‐case of I/D BKR) Trip Ckt Healthy Spring Charge Auto Trip (86) Operated SF6 Pressure Low/Lock Out N.Relay
Protocol AI/MV √ diagnosis purpose.* Signals ‐ 33 & 66KV Incomers/Out Going Signal Type DPI DPI SPI SPI DPI SPI SPI SPI SPI DPI SPI SPI SPI SPI SPI DPI SPI DCO DCO SCO IEC‐61850 Breaker ON/OFF Bank ISO ON/OFF Trip Ckt Healthy Spring Charge Breaker in service/Test Auto Trip(86) Operated Bus PT fuse Blown ‐ Metering. Bus PT fuse Blown ‐ Protection Panel DC Fail L/R Switch in Local/Remote Over Current Operated Earth Fault Operated Under Voltage Prot.Operated Over Voltage Prot.Operated Neg.Phase.sequence Operated Timer Relay operated/Normal Relay Int Fault. BKR CLS/OPN BANK ISO CLS/OPN Auto‐Trip resets from remote 3Phase R,Y,B ‐ Current&Voltage,Reactive Power,Neu.Current Fault Current Levels/Disturbance Record/ If Any Fault Graphs for Remote Digital Input/AI, soft through N.Relay/BCU √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ AI Digital Input/AI, soft through N.Relay/BCU √ √ √ √ √ √ √ √ √ √ 256
Digital Out Put soft through N.Relay/BCU Digital Input/Output Hard Wire to RTU Signal Type DPI DPI DPI DPI DPI DPI SPI SPI SPI SPI Protocol IEC‐61850 Signals ‐ 11KV Capacitors AI BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for SCADA interface work & Automation
√ √ √ √ √ √ √ √ √ √ √ √ √ √ √ SPI SPI DPI SPI SPI SPI SPI SPI SPI DCO DCO DCO DCO SCO AI/MV Fault Current Levels/Disturbance Record/ √ If Any Fault Graphs for Remote diagnosis purpose.* Breaker ON/OFF Front Bus (89A) ISO ON/OFF (In‐Case of O/D) Rear Bus (89B) ISO ON/OFF (In‐Case of O/D) Trf ISO (89T) ON/OFF (In‐Case of O/D) Earth Switch (89LE) ‐1&2 On/OFF (In‐Case of O/D) Breaker in service/Test (In‐case of I/D BKR) Trip Ckt Healthy Spring Charge Auto Trip (86) Operated Differential Operated LBB Operated REF/SEF Prot Operated SF6 Pressure Low/Lock Out Panel DC Fail L/R Switch in Local/Remote Relay Int Fault. Over Current Operated Earth Fault Operated BKR CLS/OPN COMMAND Front Bus (89A) ISO OPN/CLS COMMAND (In‐Case of O/D) Rear Bus (89B) ISO OPN/CLS COMMAND (In‐Case of O/D) 3Phase R,Y,B ‐Current&Voltage,Active&Reactive Power,Power Factor,Max.Demand,Neu.Current Signals ‐ 33 & 66KV Transformer AI Digital Input/AI, soft through N.Relay/BCU √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ Digital Out Put soft through N.Relay/BCU √ Digital Input/Output Hard Wire to RTU √ √ √ √ 257
Signal Type DPI DPI DPI DPI DPI DPI SPI SPI SPI SPI SPI SPI SPI SPI DPI SPI SPI SPI DCO DCO DCO Protocol IEC‐61850 VT fuse Fail Panel DC Fail L/R Switch in Local/Remote LBB Operated Relay Int Fault. Over Current Operated Earth Fault Operated DIFF.Prot Operated DIST.Ptot Operated BKR CLS/OPN COMMAND Front Bus (89A) ISO OPN/CLS COMMAND (In‐Case of O/D) Rear Bus (89B) ISO OPN/CLS COMMAND (In‐Case of O/D) LINE ISO (89L) OPN/CLS COMMAND (In‐Case of O/D) Auto‐Trip(86) relay resets from Remote BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for SCADA interface work & Automation
√ √ Fault Current Levels/Disturbance Record/ If Any Fault Graphs for Remote diagnosis purpose.* √ √ Breaker ON/OFF Front Bus (89A) ISO ON/OFF (In‐Case of O/D) Rear Bus (89B) ISO ON/OFF (In‐Case of O/D) Earth Switch (89AE‐1&2) ‐ On/OFF (In‐Case of O/D) Earth Switch(89BE‐3&4) ‐ On/OFF (In‐Case of O/D) Breaker in service/Test (In‐case of I/D BKR) Trip Ckt Healthy Spring Charge Auto Trip (86) Operated SF6 Pressure Low/Lock Out VT fuse‐1 Blown VT fuse‐2 Blown Panel DC Fail L/R Switch in Local/Remote AI/MV AI Transformer ‐ RTCC/A‐Eberle Signals A‐Eberle Unit Faulty/DC Fail Oil Temp Alarm √ Oil Temp trip √ Winding Temp Alarm √ Winding Temp Trip √ Buchlotz Alarm √ Buchlotz Trip √ PRD TRIP √ OLTC OSR √ MOG/LOW Oil level Alarm √ SPR Trip √ OSR Main Tank √ L/R Switch in Local/Remote √ Auto/Manual Mode √ Fan Fail √ Tap Changer Fail √ OLTC Out of Step/Stuck Up/Motor trip √ √ Tap Rise/Tap Low Command Oil Temp √ Winding Temp √ Tap Position √ Signals ‐ 33 & 66KV Bus Coupler DCO SCO Digital Input/AI, soft through N.Relay/BCU √ √ √ √ √ √ √ √ √ √ √ √ √ 258
Digital Out Put soft through N.Relay/BCU √ SPI SPI SPI SPI SPI SPI SPI SPI SPI SPI SPI SPI DPI DPI SPI SPI SPI DCO/RCO AI AI AI Digital Input/Output Hard Wire to RTU √ Signal Type DPI DPI DPI DPI DPI DPI SPI SPI SPI SPI SPI SPI SPI DPI Protocol IEC‐61850 Trf ISO (89LT) OPN/CLS COMMAND (In‐Case of O/D) Auto‐Trip (86) relay resets from Remote 3Phase R,Y,B ‐Current&Voltage,Active&Reactive Power,Power Factor,Max.Demand,Neu.Current BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for SCADA interface work & Automation
√ √ √ Signals ‐ 33 & 66KV CAP Bank Breaker ON/OFF Front Bus (89A) ISO ON/OFF (In‐Case of O/D) Rear Bus (89B) ISO ON/OFF (In‐Case of O/D) CAP Bank ISO ON/OFF (In‐Case of O/D) Earth Switch On/OFF (In‐Case of O/D) Trip Ckt Healthy Spring Charge Auto Trip(86) Operated SF6 Pressure Low/Lock Out VT fuse Blown Cap Discharge Time Netural Displacement Panel DC Fail L/R Switch in Local/Remote LBB Operated Relay Int Fault. Over Current Operated Earth Fault Operated Under Voltage Prot.Operated Over Voltage Prot.Operated BKR CLS/OPN COMMAND Front Bus (89A) ISO OPN/CLS COMMAND (In‐Case of O/D) Rear Bus (89B) ISO OPN/CLS COMMAND (In‐Case of O/D) CAP Bank ISO OPN/CLS COMMAND ( In‐case of O/D) 3Phase R,Y,B ‐ Current&Voltage,Reactive Power,Neu.Current Fault Current Levels/Disturbance Record/ √ √ √ √ √ If Any Fault Graphs for Remote diagnosis purpose.* √ √ Digital Input/AI, soft through N.Relay/BCU √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ If Any Fault Graphs for Remote diagnosis purpose.* 259
DCO DCO SCO AI/MV AI Digital Out Put soft through N.Relay/BCU √ √ √ SPI SPI SPI SPI DCO Digital Input/Output Hard Wire to RTU √ √ √ √ Signal Type DPI DPI DPI DPI DPI SPI SPI SPI SPI SPI SPI SPI SPI DPI SPI SPI SPI SPI SPI SPI DCO DCO DCO DCO AI/MV AI Protocol IEC‐61850 LBB Operated Relay Int Fault. Over Current Operated Earth Fault Operated BKR CLS/OPN COMMAND Front Bus (89A) ISO OPN/CLS COMMAND (In‐Case of O/D) Rear Bus (89B) ISO OPN/CLS COMMAND (In‐Case of O/D) Auto Trip(86) relay resets from Remote 3Phase R,Y,B ‐ Current ,BUS PT‐01 & BUS PT02 3Phase votages. Fault Current Levels/Disturbance Record/ BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for SCADA interface work & Automation
Digital Input/AI,soft through N.Relay/BCU Signals ‐ BUS PT‐1&2 BUS A (89A) ON/OFF BUS B (89B) ON/OFF Earth Switch (89LE) ‐ 1 On/OFF Earth Switch (89LE) ‐ 2 On/OFF BUS‐A ISO OPN/CLS COMMAND BUS‐B ISO OPN/CLS COMMAND Digital Out Put soft through N.Relay/BCU Digital Input/Output Hard Wire to RTU √ √ √ √ √ √ Signal Type DPI DPI DPI DPI DCO DCO [
Signals ‐ Battery Charger Battery CHG Mains AC Fail DC Mains Fail DC System Under Voltage Battery on Boost/Float DC System Earth Fault/Insulation Fail Charger Current Charger Voltage Battery Current Battery Voltage Load Current Load Voltage Signals ‐ LT Board LT AC Fail R,Y,B Phase Current Signals ‐ Fire Fighting System ON FIRE Fighting in Progress FIRE Alarm/Common Alrm Operated Cylinder PR. Low DC Fail System Out Of Service TCIV Closed FIRE System Tripping Digital Input/AI, soft through RTU √ √ √ √ √ Digital Input Hard Wire to RTU Signal Type SPI SPI SPI SPI √ √ √ √ √ √ Digital Input Hard Wire to RTU √ MFM data through Modbus protocol Signal Type SPI AI √ Digital Input Hard Wire to RTU √ √ √ √ √ √ √ √ MFM ‐ Signals Data Type R‐Phase Current MV/MFI SPI AI AI AI AI AI AI Signal Type SPI SPI SPI SPI SPI SPI SPI SPI Protocol Modbus 260
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Volume – I Technical Specification for SCADA interface work & Automation
Y‐Phase Current B‐Phase Current Neutral Current R‐Y Phase Voltage Y‐B Phase Voltage B‐R Phase Voltage Active Power Reactive Power Power Factor Maximum Demand THD MV/MFI MV/MFI MV/MFI MV/MFI MV/MFI MV/MFI MV/MFI MV/MFI MV/MFI MV/MFI MV/MFI Note – Analog Signals Post Fault Currents, Disturbance Record, If any fault records, etc.
from Numerical Relays marked with” * “needs to be confirmed from Protection
department by CES team before tender document finalization.
3.0
General Comments
1
All SCADA equipments viz DAU / DCU, MFM, Battery Charger, A-Eberle relays, etc. Should be
powered through auxiliary supply of 48 V DC.
2
Power Supply for Routers/ Gateway through an existing battery bank via Inverters (Input: 48
VDC/220 VDC, Output: 230 VAC single phase) or DC to DC converters as per the requirements
of Routers.
3
Any other wiring / cabling if required due to non availability of serial communication
/MODBUS/IEC 61850 protocols (with justified reason) should be hardwired and that is in
Contractor’s scope.
4
Suitable transducers with an output of 4-20 mA have to be installed in the RTCC /Battery
charger if required and the outputs of these transducers should be extended to terminal for
further extension to the RTU.
5
The C & R /RTCC/ Battery Charger Panel should have spare contacts (potential free) for all
SCADA signals.
6
Warranty - All Supplied SCADA material, should cover warranty for the duration of 24 months
from the date of commissioning. If any SCADA materials found faulty during warranty period
should be replaced within two weeks.
7
Training should be provided on configuration, installation, commissioning aspects of
RTU/Numerical Relay - BCU at your training/work center to the BSES team (5 to 6 persons
approx).
8
All the above features are indicative only and detailed engineering and deviation will be
analyzed just before actual procurement and with discussion through a supplier/ vendor.
4.0 System Architecture Diagram
The Tentative System Architecture diagram is enclosed for reference.
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5.0 DEVIATIONS
Deviation from this specification, if any, shall be clearly brought out in the offer. Unless the
owner explicitly accepts such deviations, it shall be considered that the offer fully complies with
the specification.
262
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TECHNICAL SPECIFICATION
FOR
CABLE INSTALLATION & ACCESSORIES
Prepared by
Sandhya Varshney
Reviewed by
Meenakshi
Approved by
Kiran K Alla
Rev: 1
Date: 25.11.2013
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1.0
INSTALLATION OF CABLES:
1.1
The cable shall be laid as per IS 1255. The Contractor shall prepare cable schedules for all
the cable circuits associated with the equipment in the substation showing length, size and
routing of each cable which shall be given suitable code numbers and submit the same for
Owner’s/Engineer’s information/approval. Cable and Conduit laying shall be done strictly in
accordance with the cable schedules.
The control and power cables shall be laid in conduits, concrete pipes, ducts, trays or cable
trenches unless indicated otherwise. The power and control cables shall be laid in different
trays. Cables shall be cleated to the cable tray after properly dressing.
1.2
1.3
Ducts shall be provided wherever cable trenches cross roads with provision of one spare duct
for future use.
1.4
All civil works, viz, excavations, sand cover, providing brick cover on directly laid cables,
construction of foundations, trenches with cable tray supports, cable ducts under roads, back
filling, finishing associated with cabling work shall be duly completed.
1.5
The Contractor shall supply and install all the surface mounted/ embedded rigid and flexible
conduits, their connections, and associated clamps, bushings, lock-nuts, caps etc required in
the cabling work.
1.6
All conduits and their accessories shall be made of galvanized heavy gauge steel as per BIS
Specification. The internal bore of all pipes shall be smooth and suitable for pulling PVC
sheathed cables without damage.
1.7
The Contractor shall supply all fittings including ordinary tees and elbows, check nuts, male
and female fittings pull boxes, junction boxes, conduit outlets, outlet boxes, splice boxes,
terminal boxes, gaskets and box covers, saddles and all supporting steel work and all such
arrangements which are required to complete the conduit installations.
1.8
Pre-fabricated junction boxes, conduit boxes and conduits shall be shop fabricated out of
malleable iron or steel plates and shall be galvanized and provided with galvanized malleable
iron or steel plate covers and rubber gaskets
1.9
All the apparatus, connections and cable work shall be designed and arranged to eliminate
the risk of fire and minimize damage which might be caused in the event of fire. Wherever
cables pass through floor or wall openings or other partitions, suitable bushes of approved
type shall be supplied and put in position by the Contractor.
1.10 Standard cable grips, reels and rollers shall be utilized for cable pulling.
1.11 Each cable, whether power or control, shall be provided with a metallic or plastic tag of an
approved type, bearing cable reference number indicated in the cable schedule prepared by
the Contractor, at every 10 meter run and at both ends of the cable, adjacent to the
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terminations as well as where cables enter or leave ducts. Cable routing shall be so done that
cables are accessible for identification and maintenance easily, and are arranged neatly.
1.12 In no case the cables shall be bent sharply or kinked with the radius of bending falling below
15D where D is the overall diameter of the cable.
1.13 When power cables are laid in the proximity of communication cables, the minimum
horizontal and vertical separation between power and communication cables shall be 600
mm. Wherever possible the power and communication cables shall be located as far from
each other as possible. The power and communication cables shall cross each other at right
angles.
1.14 Wherever cables cross roads, water, oil, sewage or steam-lines, special care shall be taken
while designing the trenches/ducts for protection of the cables.
1.15 In each cable run, some extra length shall be provided at a suitable location to enable making
of one or two straight-through joints for carrying out repairs if the cable develops fault at a
later date.
1.16 Cable splices shall not be permitted except where called for as per the construction drawings,
or where permitted by the Engineer. Straight-through joints in the run of cables wherever
unavoidable shall be through joint-boxes.
1.17 The termination of cables at various equipments shall be carefully made in accordance with
the manufacturer's instructions and detailed connection diagrams.
Termination materials for all cables shall match with the type of cable insulation and have
thermal and electrical ratings and chemical properties similar to those of the associated
cable.
All terminating materials except for those already supplied with the electrical equipment shall
be provided by the Contractor.
1.18 Control cable terminations shall be made in accordance with the color code marked wiring
diagrams of control circuits. Multi-conductor control cable jackets shall be removed as
required to train and terminate the conductors. The cable jacket shall be left on the cable, to
the extent possible. The insulated conductors from which the jacket is removed shall be
neatly trained in bundles and terminated. The bundles shall be firmly, but not tightly, tied
utilizing plastic or nylon ties or specially treated fungus-proof cord.
1.19 The connectors for control cables shall preferably terminate in Ross Courteny terminals and
washers and be covered with transparent insulating sleeves so as to prevent accidental
contact with ground or adjacent terminals. The insulating sleeves shall be fire resistant and
shall be long enough to overlap the conductor insulation.
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1.20 When control cables are to be fanned out and tied together with cord, the Contractor shall
make connections to terminal blocks and test the equipment for proper operation before tying
the cables together with cord.
1.21 Jointing of cables shall be made in accordance with the applicable Bureau of Indian
Standards Code of practice, Owners approval and manufacturer's special instructions. The
materials and tools required for cable jointing work shall be in the Contractor's scope.
1.22 The supply of joint boxes shall include all hardware fittings, compounds, tapes and other
materials required for making the joints.
Special tools, clips and saddles, glands, seals, PVC sealing compound, locknut, etc, required
for connection and termination of cables shall be in the Contractor's scope.
1.23 All cables shall be megger-tested before jointing. After jointing is completed all L.V cables
shall be megger-tested.
Cable cores shall be tested for:
i.
ii.
iii.
iv.
Continuity.
Absence of cross phasing
Insulation resistance to earth.
Insulation resistance between conductors.
2.0 CABLE TRAYS, ACCESSORIES & TRAY SUPPORTS, CONDUITS, PIPES AND
DUCTS
2.1
Cable trays shall be run either in concrete cable trench or overhead supported from building
steel. The cable trays shall be ladder type for power cable and perforated type for Control
cable. The trays shall be supplied with matching fittings and accessories.
2.2
Cable tray shall be fabricated out of rolled mild steel sheets free from flaws such as
laminations, rolling marks, pitting etc. Minimum thickness of cable trays shall be 2.0mm.
2.3
Cables shall be clamped to the cable trays in the horizontal runs with 18 gauge GI wires. For
vertical runs the cables shall be clamped with suitable site-fabricated clamps.
2.4
All cable trays including perforated sheet trays, weld mesh trays, vertical raceways shall be
hot-dip galvanized and epoxy coated. The trays shall be of standard width of 150mm,
300mm, 450mm & 600mm and standard length of 2.5M. Trays upto 300mm shall be
perforated type and above 300 mm shall be ladder type.
2.5
The conductors carrying AC and DC supplies shall not be bunched together in a conduit.
Where single-core cables are individually drawn into separate pipes, HDPE pipes shall be
used.
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2.6
Flexible metallic conduits shall be used for termination of connections to equipment to be
disconnected at periodic intervals and also for termination of connections to level switches,
limit switches, pressure switches etc.
2.7
In order to minimize condensation or sweating inside the conduit, all outlets of the conduit
system shall be properly drained and ventilated so to prevent entry of insects and water as
far as possible.
2.8
The conduits or pipes shall be run along walls, floor and ceilings, on steel supports,
embedded in soil, floor, wall or foundation, in accordance with the relevant layout drawings,
approved by the Owner.
2.9
All fittings in the conduit systems having threaded connections shall be tightened with full
thread engagement and with a minimum of wrench work in order to avoid wrench outs.
2.10 Embedded conduits running parallel to a masonry surface shall, wherever possible, have a
cover of at least 38 mm.
2.11 The conduits shall be lead into terminal boxes through the entry points provided by the
equipment manufacturers unless otherwise shown in the drawings or unless otherwise
directed by the Engineer.
2.12 While installing asbestos pipe or other fiber conduit, cracked pieces shall not be used. The
sections cracked or broken during or after placement shall be replaced.
2.13 For underground conduit runs the Contractor shall excavate and backfill as necessary.
2.14 Exposed conduit shall be adequately supported by racks and clamps or straps or by other
approved means.
2.15 Where conduits are stubbed out of masonry for future extension outside the structure, they
shall be specially protected against corrosion and shall be boxed in against possible physical
damage.
2.16 Each conduit run shall be marked with its designation as indicated on the drawings 'Identification'.
2.17 Where conduit and boxes in locations of severe exposure require, painting of galvanized
surfaces with Alkyd Resin Zinc Dust paint following by a finish coat of Aluminum paint, shall
be performed by the Contractor in a good and approved manner.
2.18 The Contractor shall bond of metal pipes or conduits in which cables have been installed to
the main earthing system.
2.19 The conduits and accessories shall be adequately protected against mechanical damage as
well as corrosion.
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3.0 TERMINATION AND STRIGHT THROUGH JOINTS
3.1
Termination and jointing kits for 11KV and 33KV grade XLPE insulated Aluminum cables
shall be proven design and make already been extensively used and type tested. Termination
kit and jointing kits shall be pre moulded type, taped type or heat shrinkable. The joints and
termination shall be tested as per IS 13573. The kit contents shall be of proven design and
type tested. Kit contents shall be supplied from the same source as were used for type
tested. The kit shall be complete with Aluminum solderless crimping cable lugs and ferrules
as DIN standard
The termination kit make and specification shall be strictly as per approval of the Owner.
3.2
The straight through and termination kit shall be suitable to withstand the fault level for 11KV
and 33KV system
4.0 CABLE GLANDS, LUGS & ACCESSORIES
4.1
The cable shall be terminated using double compression type cable glands. The cable glands
shall confirm to BS 6121 and of robust construction capable of clamping the cables and
armour firmly without injury to the insulation. The cable glands shall be made out of heavy
duty brass machine finished and nickel chrome plated. The thickness of plating shall not be
less than 10 micron. The rubber component shall be made out of neoprene and tested
quality.
4.2
The trefoil clamps for single core cables shall be pressurized die cast Aluminum or fiber
Glass or Nylon and shall include necessary fixing accessories such as GI bolts and nuts.
Trefoil clamps shall have adequate mechanical strength to withstand the forces generated by
short circuit current.
5.0 DEVIATIONS
Deviation from this specification, if any, shall be clearly brought out in the offer. Unless owner
explicitly accepts such deviations, it shall be considered that the offer fully complies with the
specification.
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TECHNICAL SPECIFICATION
FOR
GROUNDING & LIGHTNING PROTECTION
SYSTEM
Prepared by
Rev: 0
Reviewed by
Date:
Approved by
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Volume – I Technical Specification Grounding and Lightning Protection
1.0 GROUNDING & LIGHTNING PROTECTION SYSTEM:
1.1
GROUNDING SYSTEM
Earthing installation shall be carried out as per IS 3043/IEEE-80-2000. The station ground
mat shall be designed to meet touch and step voltage criteria and shall be tested after
installation to ensure the resistance of earth mats to be less than 0.5ohms. Bare conductors
to be installed below grade spaced in a grid pattern. Each junction of the grid shall be bonded
by an electric arc welding process.
All ground wires installed in conduit shall be insulated. Bare ground wires shall penetrate
concrete through a PVC sleeve.
Earthing of equipment shall generally be furnished with two separate ground pads with
tapped holes, bolts, nuts and spring washers etc. Equipment ground connections, after being
checked and tested shall be coated with anti-corrosive paint.
Metallic frame of all electrical equipment shall be earthed by two separate and distinct
connections to earthing system, each of 100% capacity. Steel columns, metallic stairs, hand
rails etc. of the building housing electrical equipment shall be connected to the nearby
earthing grid conductor by one earthing. Metallic sheaths, screens, and armour of all multi
core cables shall be earthed at both ends. Sheaths and armour of single core cables shall be
earthed at switchgear end only unless otherwise instructed by Owner. Every alternate post of
the metallic fence shall be connected to earthing grid by one GS flat and gates by flexible
lead to the earthed post. Rail for transformers within the plant area shall be bonded across
fish plate and connected to earthing grid at several locations.
For prefabricated cable trays, a separate ground conductor shall run along the entire length
of cable tray and shall be suitably clamped on each cable tray at periodic intervals. Each
continuous laid out lengths of cable tray shall be earthed at minimum two places by GS
flats to Owner's earthing system, the distance between earthing points shall not exceed 30
meter. Wherever earthmat is not available Contractor shall do the necessary connections by
driving an earth electrode in the ground.
Neutral points of transformer shall be solidly earthed by means of 2 Nos 75X10mm GI flat.
Each earthing lead from the neutral of the Transformers shall be directly connected to two
electrodes in treated earth pits which in turn shall be connected to station earthing grid.
Neutral connections and metallic conduits/pipes shall not be used for the equipment earthing.
Lightning protection system down conductors shall not be connected to other earthing
conductors above the ground level.
Connections between earth leads and equipment shall normally be of bolted type. Contact
surfaces shall be thoroughly cleaned before connections.
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All ground conductor connections shall be made by electric arc welding and all equipment
earth connections shall be made by bolting with the earthing pads through flexible insulated
cable leads. Ground connections shall be made from nearest available station ground grid
risers. Suitable earth risers approved by Engineer shall be provided above finished
floor/ground level, if the equipment is not available at the time of laying of main earth
conductor
Resistance of the joint shall not be more than the resistance of the equivalent length of
conductor. For rust protection the welds should be treated with red lead compound and
afterwards thickly coated with bitumen compound.
Earthing conductors buried in ground shall be laid minimum 600 mm below grade level
unless otherwise indicated in the drawing. Earthing conductor’s crossings the road shall be
installed at 1000 mm depth and where adequate earth coverage is not provided it shall be
installed in Hume pipes. Earthing conductors embedded in the concrete floor of the building
shall have approximately 50mm concrete cover.
Minimum earth coverage of 300mm shall be provided between earth conductor and the
bottom of trench/foundation/underground pipes at crossings. Wherever earthing conductor
crosses on runs at less than 300mm distance along metallic structures such as gas, water,
steam pipe lines, steel reinforcement in concrete, it shall be bonded to the same.
Earthing conductors along their run on columns, walls, etc. shall be supported by suitable
welding/cleating at interval of 1000mm.
Electrodes shall be embedded below permanent moisture level. Minimum spacing between
electrodes shall be 6000mm. Earth pits shall be treated with salt and charcoal. The earth pit
and electrode shall be provided strictly as per IS 3043.
1.2
On completion of installation, continuity of earth conductors and efficiency of all bonds and
joints shall be checked. Earth resistance at earth terminations shall be measured in
presence of Owner's representatives. Thickness of galvanizing shall be at least 610gm/
sqmm or 86 microns for all galvanized steel conductors.
Ground Electrode shall be 3M long MS rod of required size. These are to be fabricated and
driven into the ground by the side of mat conductors. All connection to the conductors shall
be done by arc welding process.
1.3
Risers are required for connecting the equipment and structures with the ground mat. These
will be MS rod, laid from ground mat to above ground level properly clamped or supported
along the outer edge of the concrete foundation. Connection to the ground mat shall be done
by arc welding and the other end is to be kept free, at least 300 mm above ground level.
1.4
All steel Structures are required to be grounded at two points from ground mat. Laying
supporting and connection at both end are within the scope of this specification.
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All earth pits provided at the grid substation shall be interconnected with each other by 40
mm MS Rod only. The GI flat shall be buried in the earth at a minimum depth of 300 mm.
Minimum ground coverage of 300mm shall be maintained between main earth grid and
bottom of trench, tunnels, underground pipes other services / foundations. The earth grid
conductor shall be run along the building column wall etc. with adequate and suitable
supports at 750mm interval, if site conditions warrant so. The riser for equipment earthing
shall be 75X10 mm GI flat. The orientation of these risers shall be such that minimum
earthing strip is consumed for equipment earthing.
All the further joints / connection of GI Flat shall be arc welded.
1.5
To ensure good welding, it should be carried out only after scratching off the galvanization,
dirt, grease etc by thorough cleaning of contact surface. After welding it will be made with
anticorrosive zinc rich paint.
The equipment connection with GI Flat shall be bolted connection. Each bolted connection
shall be taken through two numbers bolts at each joint to ensure tightness and avoid
loosening with passage of time.
The equipment connection with GI Flat shall be bolted connection. Each bolted connection
shall be taken through two numbers bolts at each joint to ensure tightness and avoid
loosening with passage of time.
In case the GI flat is to cross any obstruction, it shall be laid below the obstruction. At the
crossing of building walls, floors etc the earth conductor shall pass through PVC conduit.
Both ends of conduits shall be sealed after laying of conductor to prevent ingress of water.
Contractor shall use GI strip of following specification: - The GI flat will have minimum 610
gm/mm2 Zinc coating and minimum 86 microns thickness. The galvanization provided shall
be as per IS 2629. The galvanized surface shall consist of a continuous and uniform thick
coating of zinc, firmly adhering to the surfaces of steel. The finished surface shall be clean
and smooth and shall be free from defects like discolored patches, bare spots, and
unevenness of coating, spiky deposits, and blistered surfaces, flaking or peeling off.
All hardware like bolts, nuts, spring and flat washers shall be galvanized; Stainless Steel or
Zinc passivated shall be arranged by contractor.
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2.0 EQUIPMENT EARTHING
2.1
All the equipment should be grounded with double run earth strip directly connected to earth
mat at two different points.
The table below provided the guidelines for selection of earth conductor for each equipment.
2.1.1
Description/location
Size
2.1.2
Earth mat
40 mm dia rod (min) to be selected by the contractor
based on the calculations.
2.1.3
Power Transformer
100 X 8mm
2.1.4
Station transformer
50x6mm
2.1.5
11KV Switchgear
50x6mm
2.1.6
415V panel
50x6mm
2.1.7
Lighting panel
25x3 mm
2.1.8
2.1.9
Junction box
7/8 SWG
Street lighting pole
25x3 mm
2.1.10
Metallic fence
25x3 mm
2.1.11
Transformer yard fence and gate
50x6 GI flat with the help of flexible copper braid.
2.1.12
HV/LV/ LV Neutral cable box
50x6 GI flat
2.1.13
OLTC Drive mechanism body
25X3 GI flat
2.1.14
Battery charger panel
25X3 GI flat
2.1.15
DCDB
25X3 GI flat
2.1.16
Capacitor Bank Structure
50 X 6 GI flat
2.1.17
Capacitor unit and reactors
50 x 6 GI flat
2.1.18
Outdoor Circuit breaker, CT, PT &
CVT
Secondary terminal Box of outdoor
CT, PT & CVT
Isolator Mechanism box, earth
switch box
50 X 6
2.1.21
Gantry tower and structure
75 X 10 mm
2.1.22
Electronic Earthing
As per recommendation of SCADA vendor
2.1.19
2.1.20
25 X 6 mm
25 X 6 mm
2.2
For switchgear rooms, a local earth conductor of size 50x 6 mm GI flat may be run around
the room below floor to facilitate earthing of equipments in switchgear room. This grid shall be
connected to the main earth grid at minimum two points. Risers in this case shall be of size
50 x 6 mm GI flat.
2.3
It is to be ensured that all the switchgears and transformers earth points/ connections are
connected to earth grid and all the main and auxiliary earth grids are interconnected at
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minimum two points. With the above arrangement, the return path to the respective
transformer neutral will have a predominantly metallic path. (i.e. Cable armour >>switchgear
earth bus>>external earth flat>>earth grid>>transformer neutral.).
2.4
Where a 66 kV overhead line terminates at the substation, a metallic continuity between the
end tower and the substation earth grid should be established with two independent
connections.
2.5
The GI Flat shall be laid minimum 300 mm below the ground level except for the indoor
location, where it can run over the finished floor level.
.
2.6
The GI flat shall be welded after scratching off the galvanization locally and thorough cleaning
of contact surface. After welding or bolting arrangement the joint shall be provided with
anticorrosive Bitumen compound or zinc Phosphate paint. Wherever bolted connection is
taken, it shall be taken through two bolts at each joint to ensure tightness and avoid
loosening with passage of time.
2.7
Details of welding, bolting arrangement for various types of joints shall be as per Indian
Standard.
2.8
Two separate and distinct earth connections shall be used for safety earthing of non-current
carrying metallic enclosure of all equipments.
2.9
Two separate and distinct earth connections shall be used for earthing of Lightning / surge
absorber.
2.10 Neutral bushing of oil/dry type Station transformer shall be connected to two independent
earth pits by two no’s separate GI strips.
2.11 Transformer yard fence, structures shall also be connected with the earth mat by 50X6 GI
Flat with the help of flexible copper braid.
2.12 All damages to the galvanized finishes shall be made perfect with zinc rich or bitumen paint.
2.13 RTU, marshalling box of SCADA or any other equipment installed in substation for SCADA
shall not be connected to the earth grid.
3.0 LIGHTNING PROTECTION
DESIGN OF LIGHTNING PROTECTION
3.1
Direct stroke lightning protection (DSLP) shall be provided in the EHV switchyard by shield
wires. The final arrangement shall be decided after approval of the DSLP calculations. The
Contractor is required to carry out the DSLP calculations and submit the same to the Owner
for approval of the same at detailed engineering stage after award of contract.
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3.2
The lightning protection system shall not be in direct contact with underground metallic
service ducts and cables.
3.3
A 40 mm dia. 3000mm long MS earth electrode with test links, CI frame & Cover shall be
provided to connect down conductor of towers with peak. The test joint shall be directly
connected to the earthing system.
3.4
Conductors of the lightning protection system shall not be connected with the conductors of
the safety earthing system above ground level.
3.5
Down conductors used for lightning protection shall be cleated on the structures at 2000mm
interval.
3.6
Connection between each down conductor and rod electrodes shall be made via test joint
(pad type compression clamp) located approximately 150 mm aboveground level.
3.7
Lightning conductors shall not pass through or run inside G.I. conduits.
3.8
All metallic structures within a vicinity of 2000 mm in air and 5000mm below ground shall be
bound to the conductors of lightning protection system.
3.9
Constructional Features
3.9.1
Galvanized Steel (Applicable for exposed G.S. flats)
a) Steel conductors shall be galvanized according to IS: 2629.
b) The minimum weight of zinc coating shall be 610gm/sq. m. and minimum thickness
shall be 86 microns.
c) The galvanized surfaces shall consist of a continuous and uniformly thick coating of
zinc, firmly adhering to the surfaces of steel. The finished surface shall clean and
smooth and shall be free from defects like discolored patches, bare spots,
unevenness of coating, spelter which is loosely attached to the steel globules,
spiky deposits, blistered surfaces, flaking or peeling off etc. The presence of any of
these defects noticed on visual or microscopic inspection shall render the material
liable to rejection.
3.10 Tests
3.10.1 The Contractor shall perform all tests and inspection to ensure that material and
workmanship are according to the relevant standards. Contractor shall have to demonstrate
all tests as per specification and equipment shall comply with all requirements of the
specification.
a) The galvanized steel shall be subjected to four one-minute dips in copper sulphate
solution as per IS: 2633.
b) Zinc Coating thickness : As per IS: 4759
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c)
d)
e)
f)
Uniformity of zinc coating : As per IS: 2633
Adhesion Test : As per IS: 2629
Mass of zinc coating : As per IS: 6745
Chemical Analysis: As per IS: 513 & IS: 1079
3.10.2 The accessories for GSS Groundwire such as Tension Clamps, Copper braided wire etc.
shall conform to & meet the test requirements of ARE: 2121.
4.0 DEVIATIONS
Deviation from this specification, if any, shall be clearly brought out in the offer. Unless owner
explicitly accepts such deviations, it shall be considered that the offer fully complies with the
specification.
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TECHNICAL SPECIFICATION
FOR
ILLUMINATION SYSTEM
Prepared by
Rev: 0
Reviewed by
Date:
Approved by
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1.0 ILLUMINATION OF SYSTEMS:
1.1
The design of the illumination system shall ensure availability of the average illumination
levels as specified below with the maximum possible uniformity in the entire substation. The
illumination system shall consist of the normal lighting system and emergency lighting
system.
1.2
The minimum illumination levels shall be as specified below.
i)
ii)
iii)
iv)
v)
vi)
vii)
viii)
Outdoor Substation
Roads within substation
Boundary wall of the substation
Control room
Switchgear Room
Battery room
Stair case
Cable cellar ( for option A)
: 20 LUX
: 20 LUX
: 10 LUX
: 300 LUX
: 200 LUX
: 100 LUX
: 100 LUX
: 70 LUX
The illumination level of specific spots such as operating mechanisms of Capacitor bank
isolator, oil level and temperature gauges of transformer etc. shall be minimum 100 Lux.
1.3
The bidder shall include in his offer light fittings of standard makes such as
GE/Philips/Crompton/Bajaj or equivalent. Light fittings to be supplied by the bidder shall be
subject to approval by the Owner.
1.4
Complete design calculation sheets for arriving at the number and type of luminaries required
for the normal and emergency requirements shall be furnished by the Contractor. Design
calculation sheets for the selection of cables, MCB, HRC fuses, bus bars, etc. are also
required to be furnished for Owner's approval.
1.5
The illumination system load and welding load in the substation area shall be supplied from
415/240 volt ACDBs to be provided in the substation control room. Requisite numbers of 3phase, 4-wire, cable circuits for illumination system and welding socket outlets shall be
extended from the above board. The laying of cables from the Board to the illumination
system/welding socket outlets and their installation are included in the Bidder’s scope
1.6
Each outgoing cable circuit for illumination and welding loads from the 415 volt switchboard
shall terminate in the respective outdoor pillar boxes located in the substation. Outgoing
feeders from the illumination and welding pillar-boxes shall be taken to the various
illumination and welding load points in the substation Necessary fuses shall be provided near
light fixtures in the substation. 06 No’s Welding socket shall be provided in the substation, out
of which 4 no’s shall be outdoor and two inside the control room building.
1.7
The emergency illumination load shall be supplied from the main emergency illumination
board located in the control room. Necessary cable circuits with appropriate fuses shall be
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provided by the Contractor for the supply system for emergency illumination load of the
substation.
1.8
Complete manufacturer's literature/catalogues, performance curves, illumination distribution
curves, G.A. drawings, specification sheets, etc. as relevant in respect of all
materials/equipment to be supplied shall be submitted by the Contractor.
1.9
After completion of installation of the illumination system in the substation, the actual
illumination level at different locations shall be measured by the Contractor in the presence of
Owner's authorized representative. If the average value of the measured illumination levels is
found to fall short of the specified levels, the Contractor shall have to provide additional
lighting fixtures so as to achieve the specified levels of illumination at no additional cost to the
Owner. While measuring the illumination levels due allowance shall be made on account of
maintenance factor. The specified lux levels shall be suitably increased to cover maintenance
factor of 0.6 for outdoor areas.
1.10 Emergency DC lighting system shall be provided in the substation wherever required. The
emergency lighting shall be adequate for safe movement by the operating personnel in the
substation in the event of failure of normal lighting system. A total 0f minimum 12 no’s
individually controllable 60 watt lamps shall be provided in the substation.
2.0 DISTRIBUTION PILLARS FOR NORMAL ILLUMINATION SYSTEM
Distribution pillars of adequate dimensions shall be constructed from sheet steel having a
thickness not less than 2 mm. The pillars shall be totally enclosed weather-proof, dustproof,
vermin-proof, having hinged doors with locking arrangement and shall be capable of being
mounted in the substation. The pillars suitable for cable entry at the bottom shall be designed
for easy access of connections to terminals and inspection of equipment mounted therein.
Each pillar shall accommodate the following
i)
ii)
iii)
iv)
v)
vi)
vii)
One incoming, 4-pole (3 phase and neutral) isolating switch with cartridge fuses or
MCB of appropriate current rating
3-phase and neutral bus bars of appropriate current rating
Single-pole earth leakage circuit breakers of suitable current ratings on all outgoing
circuits.
Neutral links for all outgoing circuits
Cable lugs, compression type cable glands, name plates, circuit numbers, earthing
lugs, etc. to make the pillar complete in all respects.
20% spare outlets shall be provided for outgoing feeders.
Three (3) indicating lamps with fuses to indicate that supply is 'ON'.
Local junction boxes for emergency illumination in the substation shall be provided, as
required
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3.0 LIGHTING DISTRIBUTION BOARDS
The Lighting Distribution Boards shall consist of the followings:
i)
ii)
iii)
iv)
v)
vi)
vii)
viii)
ix)
Metal-clad enclosure with minimum 2 mm CRCA sheets for load-bearing members and
1.6 mm for non load-bearing members suitably reinforced with structural.
3-phase, 4-wire busbar system with high conductivity Aluminum busbars mounting on
FRP insulators having anti-tractive property with minimum 25 mm phase-to-phase and
minimum 19 mm phase-to-earth clearances. The busbars shall be uniform throughout
the length of the LDB and busbar joints shall be silver plated and covered with shrouds.
The busbars shall be suitable for short-time current rating of 40KA for 1 Sec.
The busbar temperature rise shall not exceed 35 Deg.C over an ambient of 50 Deg.C.
The degree of protection for the LDB shall be IP-54.
All cables shall enter from the bottom.
Three (3) Nos. indication lamps (Red, Yellow, Blue) shall be provided to indicate that
the incoming supply is available. Similarly, 3 Nos. indication lamps shall be provided to
indicate that the busbar is energized.
The LDBs shall be provided with a continuous busbar of 25 x 6 sq.mm (electrolytic
copper) with suitable hardware for connection to the main grounding grid.
The enclosure shall be painted externally with Shade No., 692 to IS:5 and internally
with brilliant white of semi-glossy finish to IS:5.
4.0 MAIN EMERGENCY LIGHTING BOARD
The Main Emergency Lighting Board shall consist of the following:
i)
ii)
iii)
iv)
v)
vi)
vii)
viii)
ix)
x)
Automatic changeover contactor
Voltage sensing relays.
Time delay relay.
Bus Bars
Two pole/three pole rotary switches with HRC fuse for incoming and outgoing feeders
Test switch, push button type.
Indicating lamps, ac - Green, dc - Red.
Terminals for remote indication.
Cable lugs, compression type cable glands, name-plates, circuit numbers, earthing lugs
and remote indication wiring upto substation 415V a.c. control board, to make the
board complete in all respects.
Change over DC lighting in case of black out.
The main emergency lighting board shall have an automatic changeover switch to
energize the dc lighting system in the event of AC power failure. It shall have voltagesensing relays to perform the changeover automatically when AC voltage of any one
phase falls below 70 percent of 240 volts and continues at that low level for more than
10 seconds. These shall changeover from DC to AC again when 70 percent of 240 volt
is restored and this continues for 10 seconds.
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Local Emergency Lighting Pillar shall be identical in details to Lighting Distribution Pillar
specified in above para except that it shall have two pole isolating switch fuse unit on
the incoming side and only two busbars and shall be without neutral links.
5.0 LUMINARIES
5.1
Luminaries for use in normal and emergency illumination systems in the substation are
suggested below. In case the bidder intends to use luminaries of different types, he shall
clearly furnish the advantages and reasons for the proposed luminaries in his bid. All the
luminaries shall be supplied complete with all accessories and lamps
Sl. No.
5.2
Area / Type of Illumination
System
1
Outdoor
2
Roads
3
Specific spots flood light
Types of fitting & Lamps
Water-tight flood Philips SNF- 14 light with
SONT (PLUS) 250 W Lamp or equivalent
Philips SRP-51 water-tight street light fitting
with SONT (PLUS)150W lamp or equiv
Water-tight fitting Philips SVF- 12 with SON
250 W or equivalent
The flood light luminaries in the substation shall be fixed at suitable height on the substation
structures/ building, so as to provide the specified average illumination in the substation area
without causing any glare to the operational/ maintenance staff working in the substation.
While fixing the luminaries it shall be ensured that the stipulated electrical clearances are not
violated. The Contractor shall supply and install suitable type of pole structures, required for
installing the fittings for illuminating the roads, fence etc
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6.0 WIRING
All lighting fixtures and 5A convenience outlets shall be wired with 1.1 KV grade PVC
insulated extra flexible, multi stranded, copper conductor cables of size not less than 2.5
sq.mm.
For 15A heavy-duty outlets copper conductor cables of size not less than 6 sq. mm shall be
used.
The wiring shall consist of phase, neutral and ground. For grounding the lighting
fixtures/convenience outlets etc., GI wire of size not less than 14 SWG shall be used. The
phase and neutral conductor shall be suitably colour coded.
Supply shall be looped between the lighting fixtures of the same circuit by using junction
boxes. For this purpose one (1) 100 mm x 100 mm square junction box shall be provided for
each lighting fixture. For recessed lighting fixtures, supply shall be extended from the junction
boxes to the fixtures by means of flexible conduits. While for stem-mounted/wall-mounted
lighting fixtures the junction box shall be mounted below one of the mounting stems.
For lighting branch circuits the nos. of lighting switches shall be decided keeping in mind the
ease of control, as well as to limit the current to 2.5A per circuit.
For convenience outlets, the bidder shall design the wiring scheme so as to limit 6 nos. of 5A
outlets per branch circuit and two nos. of 15A outlets per branch circuit.
All wiring materials such as terminals, crimping lugs, ferrules etc. shall also be provided by
the Contractor.
No section of the conduit shall be filled with more than 70% of its area. Any consumable
material that is required for pulling the wires through conduit shall also be provided by the
Contractor.
Lighting fixtures coming in one area shall be evenly distributed between three phases so that
tripping of one phase or two phases does not cause total loss of illumination in that area.
7.0 JUNCTION BOX / WALL BOX
100 mm x 100 mm junction boxes and wall boxes of standard size shall be provided.
Wall boxes and junction boxes shall be made of sheet metal with a thickness of 14 gauge
(minimum). Necessary conduit termination fittings such as bushings, locknuts etc. also be
provided.
8.0 DEVIATIONS
Deviation from this specification, if any, shall be clearly brought out in the offer. Unless owner
explicitly accepts such deviations, it shall be considered that the offer fully complies with the
specification.
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TECHNICAL SPECIFICATION
FOR
EXHAUST & VENTILATION SYSTEM
Prepared by
Rev: 0
Reviewed by
Date:
Approved by
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Volume – I Technical Specification Exhaust and Ventilation System
1.0 INTENT OF SPECIFICATION
1.1
This specification is intended to cover the design, manufacture, assembly, testing at
manufacturer’s works, supply & delivery, properly packed for transport for site of Air
Conditioning system and Ventilation system for substation control room building complete
with all materials and accessories for efficient and trouble free operation
1.2
In the event of any discrepancy with the listed documents, the stipulation this specification
shall govern.
2.0 SCOPE OF SUPPLY
The following equipment shall be furnished with all accessories.
a)
b)
c)
d)
e)
f)
Exhaust and supply air fans for ventilation
All necessary components for operation of the above equipment.
All wiring & accessories to complete the installation.
All relevant drawings, data & instruction manuals.
Mandatory spares.
Commissioning spares and recommended spare part list for three (3)
3.0 GENERAL REQUIREMENT
3.1
All equipment and material shall be designed, manufactured and tested in accordance with
the latest applicable Indian Standards except where modified and/or supplemented by this
specification.
3.2
Equipment and materials conforming to any other standard, which ensures equal or greater
quality, may be accepted. In such case copies of the English version of the standard adopted
shall be submitted along with the bid.
3.3
In particular, the following standards and specifications are applicable.
This specification shall be read and constructed in conjunction with the bid documents and
annexure to determine the scope of work.
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4.0 DESIGN CRITERIA
Exhaust system
Number and details
of wall mounted fan
Power Point &
socket
Exhaust fan of propeller type / axial type shall be provided for rooms with
suitable drive motor, DOL starter, rain protection cowl with screen, grouting
bolts etc. Fan for battery room shall be bifurcated type spark proof
construction. The quantity shall be based on calculation.
Exhaust fan shall be supplied in however minimum quantity of building is
as under
- Control Room -Two
- Switchgear room- Six
- Battery Room-one
-Toilet - one
Battery room – 1 No
Control room – 3 No’s
Switchgear Room – 4 No’s
Each room shall be provided with at least 2 No’s 5 / 15
Ampere Switch socket and 2 no’s 5 ampere switch sockets. Two no’s
industrial 16 ampere points shall be provided in control room for installation
of air conditioning system for future.
All equipment, accessories and wiring shall have fungus protection,
involving special treatment of insulation and metal against fungus, insects
and corrosion.
5.0 DEVIATIONS
Deviation from this specification, if any, shall be clearly brought out in the offer. Unless owner
explicitly accepts such deviations, it shall be considered that the offer fully complies with the
specification.
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TECHNICAL SPECIFICATION
FOR
FIRE DETECTION AND ALARM SYSTEM
Prepared by
Rev: 0
Reviewed by
Date:
Approved by
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Volume – I Technical Specification Fire Detection and Alarm System
1.0
INTENT OF SPECIFICATION:
This specification is intended to cover the design, manufacture, assembly, testing at
manufacturer’s works, supply & delivery, properly packed for transport FOR site of Fire and
smoke Detection & Alarm System for substation control room building complete with all
materials and accessories for efficient and trouble free operation.
In the even of any discrepancy with the listed documents, the stipulation of this specification
shall govern.
2.0
SCOPE OF WORK
2.1
Scope of Supply
The following equipment shall be furnished with all accessories :a)
b)
c)
d)
e)
f)
Smoke and heat detectors and installation.
Manual call point for the substation building.
Fire detection alarm panels which shall be SCADA compatible.
All wiring & accessories to complete the installation.
All installation hardware.
All relevant drawings, data & instruction manuals.
3.0
GENERAL REQUIREMENT
3.1
Codes and Standard
All equipment and material shall be designed, manufactured and tested in accordance with
the latest applicable Indian Standards except where modified and/or supplemented by this
specification.
Equipment and materials conforming to any other standard which ensures equal or greater
quality may be accepted. In such case copies of the English version of the standard adopted
shall be submitted along with the bid.
In particular, the following standards and specifications are applicable.
Indian Electricity Rules
Indian electricity act
CBIP manual
IS 2189
IS 2190
IS 1646
Relevant safety regulation of CEA
Code of practice for selection, installation & maintenance of
automatic fire alarm system.
Selection, installation & maintenance of first aid, fire extinguisher.
Tariff Advisory Committee Manual
Code for practice for fire safety of buildings
This specification shall be read and constructed in conjunction with the bid documents and
annexure to determine the scope of work.
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4.0
DESIGN CRITERIA
General
Location
Operation
Detection & Alarm system
Cabling
Tests
Site Test
1. The fire detection system shall consist of various types
of fire detectors, control cabling, fire alarm panels,
central monitoring station, annunciation/control panels,
local panels.
2. The fire detection and alarm system shall be
microprocessor based, analogue addressable system.
3. A central monitoring system shall be provided in the
control room covering complete substation.
4. The control system shall be compatible to be
interfaced with SCADA system.
Fire detectors shall be provided for the entire substation
building including control room, switchgear room, battery
charger, corridors etc in the ground floor only. Fire detectors
shall be located at strategic location in various rooms of the
building.
The operation of any of the fire detectors / manual call point
should result in the following :
a) A visual signal exhibited in the alarm panel indicating
the area where the fire is detected.
b) An audible alarm (Hooter) sounded in the panel.
c) An external alarm sounded in the building, location of
which shall be decided during detailed engineering.
d) An alarm should be signaled to the control room.
1. Each zone shall be provided with two zone cards in
the panel so that system will remain healthy even if
one the cards become defective.
2. The control panel shall be suitable for 230V AC and
220V DC as power supply.
The detector cable and the other control cable shall be
armoured, screened and twisted FRLS type in external areas
and shall be of unarmoured FRLS type inside building (in
conduits)
All equipment shall be completely assembled wired, adjusted
and routine tested at the factory as per relevant standards.
Following tests shall be performed on the system
a) Response characteristics of fire detectors.
b) Performance test on fire extinguisher as required in
the code.
c) A comprehensive visual and functional check for the
fire alarm panel.
d) Verification of wiring as per approved schematic.
e) Testing of fire detection panel as per BS3116 Part IV.
All the detectors installed shall be tested for actuation by
bringing a suitable smoke source near the detector creating a
stream smoke over the detector. After each test smoky
atmosphere should be cleared so that the detector shall reset.
Certify proper operation of all detectors and call points.
One of each type of extinguisher shall be tested for its
performance.
289
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification Fire Detection and Alarm System
5.0
DEVIATIONS
Deviation from this specification, if any, shall be clearly brought out in the offer. Unless owner
explicitly accepts such deviations, it shall be considered that the offer fully complies with the
specification.
290
BSES Bhawan, Nehru Place, New Delhi- 19
TECHNICAL SPECIFICATION
FOR
FIRE EXTINGUISHER
Prepared by
Rev: 0
Reviewed by
Date:
Approved by
291
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification Fire Extinguisher
1.0
INTENT OF SPECIFICATION:
This specification is intended to cover the design, manufacture, assembly, testing at
manufacturer’s works, supply & delivery, properly packed for transport FOR site of Portable
wall and trolley mounted Fire extinguisher and fire buckets for substation control room
building complete with all materials and accessories for efficient and trouble free operation.
In the even of any discrepancy with the listed documents, the stipulation of this specification
shall govern.
2.0
SCOPE OF WORK
2.1
Scope of Supply
The following equipment shall be furnished with all accessories :a)
b)
c)
d)
e)
f)
g)
Wall mounted fire extinguisher
Trolley mounted fire extinguisher
Sand buckets with stand.
All installation hardware.
All relevant drawings, data & instruction manuals.
Mandatory spares.
Commissioning spares and recommended spare part list for three (3) years of
operation.
3.0
GENERAL REQUIREMENT
3.1
Codes and Standard
All equipment and material shall be designed, manufactured and tested in accordance with
the latest applicable Indian Standards except where modified and/or supplemented by this
specification.
Equipment and materials conforming to any other standard which ensures equal or greater
quality may be accepted. In such case copies of the English version of the standard adopted
shall be submitted along with the bid.
In particular, the following standards and specifications are applicable.
292
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification Fire Extinguisher
Indian Electricity
Rules
Indian electricity act
IS 2190
IS 1646
IS 940
IS 2878
IS 2171
IS 10204
Relevant safety regulation of CEA
Selection, installation & maintenance of first aid, fire extinguisher.
Tariff Advisory Committee Manual
Code for practice for fire safety of buildings
Portable fire extinguisher, Water type - specification
Fire extinguisher CO2 type
Specification for fire extinguisher dry powder.
Specification for fire extinguisher Mechanical foam type.
This specification shall be read and constructed in conjunction with the bid documents and
annexure to determine the scope of work.
4.0
DESIGN CRITERIA
General
Location
Distribution
Tests
5.0
The contractor shall supply the required type and
quantities of fire extinguisher and Sand buckets. The quantity
shall be as per TAC recommendations.
Fire extinguisher and sand buckets shall be installed in
Control room, battery room, switchgear room, ACDB &
battery charger room, Cable cellar, Transformer yard,
Outdoor switchyard and Capacitor bank.
The fire extinguishers in various locations shall be as per the
guidelines of TAC-India.
All equipment shall be completely assembled wired,
adjusted and routine tested at the factory as per relevant
standards.
DEVIATIONS
Deviation from this specification, if any, shall be clearly brought out in the offer. Unless owner
explicitly accepts such deviations, it shall be considered that the offer fully complies with the
specification.
293
BSES Bhawan, Nehru Place, New Delhi- 19
TECHNICAL SPECIFICATION
FOR
TRANSFORMER OIL
Prepared by
Sandhya Varshney
Rev: 0
Reviewed by
Meenakshi
Date:
Approved by
Kiran Kumar Alla
294
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for Transformer Oil
Transformer oil shall be new and confirm to the following requirements:
1. CODES & STANDARDS
Latest revision of following codes & standards with all amendments –
1.1
1.2
Standard No
IS 335
IS 1783
Title
New Insulating Oil
Drums for Oils
2. PROPERTIES
The insulating oil shall have following features:
2.1
Appearance
2.2
2.3
Density at 29.5 deg C Max
Kinematics viscosity Max
2.4
2.5
2.6
2.7
Interfacial tension at 27 deg C
Flash point pensky- marten (closed)
Pour Point, Max
Neutralization value
i) Total acidity, Max
ii) Inorganic acidity / Alkalinity
Corrosive Sulfur
Electric strength breakdown voltage
i) New unfiltered oil. Min
ii) After filtration Min
Dielectric dissipation factor (tan δ)
2.8
2.9
2.10
2.11
2.12
2.12
2.13
Oxidization Stability
i) Neutralization value after
oxidation, Max
ii) Total sludge, after oxidation,
Max
iii) Max Tan delta at 70 deg C
Specific resistance (resistivity)
a. 27 deg C
b. 90 deg C
Ageing
characteristics
after
accelerated ageing
i) Specific
resistance
(resistivity)
a. 27 deg C
b. 90 deg C
ii) Dielectric dissipation factor
(tan δ) at 90 deg C Max
iii) Total acidity, Max
iv) Total sludge, Max
Presence of oxidation inhibitor
Clear, transparent and free from suspended
matter or sediments
0.89 g/cm3
16 cSt at 27 deg C
11 cSt at 40 deg C
0.04 N/m
140 deg C
- 15 deg C
0.03 mg KOH/g
Nil
Non-corrosive
Average value of six samples
30 kV (rms) min
60 kV (rms)
0.002 at 90 deg C, Max
0.0005 at 27 deg C, Max
0.15 mg KOH/g
0.03 % by weight
0.1
3000 X 10^12 ohm-cm
150 X 10 ^12 ohm-cm
(open breaker method with copper catalyst)
27 X 10^12 ohm-cm
2 X 10 ^12 ohm-cm
0.1
0.05 mg KOH/g
0.05 % by weight
no antioxidant additives
295
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for Transformer Oil
2.14
2.15
2.16
2.17
Water content, Max
Max PCA ( Poly cyclic aromatics)
content
PCB (Poly chlorinated biphenyl)
content
Tests
40 ppm
3%
Not detectable
As per IS 335
296
Specification for
66kV SOLIDCORE POST INSULATORS
Specification no. GN101-03-SP-49-00
Prepared by:
Checked by :
Approved by:
Name
Name
Name
Sign
K.K.Alla
Tanu
Sign
Sign
Meenakshi
297
Rev
00
Date
31-July-14
GN101-03-SP-49-00
General Specification
1.0
CODES & STANDARDS:
Materials, equipment and methods used in the manufacture of Solid core post insulators shall
conform to the latest edition of following –
National/International Standard
Standard Code
IS - 2544
IS - 731
IEC - 62231
IEC - 60273
IEC - 60168
IEC - 60815
Standard Description
Porcelain post insulators for system with nominal voltage
greater than 1000 V
Porcelain insulators for overhead lpower lines with a
nominal voltage greater than 1000 V
Composite station post insulators for substation with a.c.
voltages greater than 1000 V upto 245 kV
Characteristic of indoor and outdoor post insulator for
system with nominal voltage greater than 1000V
Tests on indoor & outdoor post insulators of ceramic
material or glass for system with nominal voltage greater
than 1000V
Selection and dimensioning of High voltage insulators for
use in polluted conditions
The electrical installation shall meet the requirement of Indian Electricity Rules as amended
upto date, relevant IS code of practice and Indian electricity act. In addition other rules &
regulations applicable to the work shall be followed. In case of any discrepancy the most
stringent & restrictive one shall be binding
2.0 MAJOR DESIGN CRITERIA
2.1.0
2.1.1
2.1.2
2.1.3
Description
Requirement / Rating
System
Voltage
Frequency
Fault level
66KV
66KV ± 10%
50HZ ± 5%
31.5KA for 3secs.
298
GN101-03-SP-49-00
i)
3.0
2.1.4
Type
2.1.5
Protection against Corrosion
QUALITY ASSURANCE
3.1
3.2
4.0
Post insulators for substation shall be
of outdoor type suitable for operation
under tropical condition with high
temperature, humidity and rainfall.
ii) Porcelain shall be sound, free from
defects,
thoroughly
vitrified
and
smoothly glazed
iii) Unless otherwise specified, the glaze
shall be brown in color. The glaze shall
cover all the porcelain parts of the
insulators except those areas, which
serve as supports during firing or left
unglazed for the purpose of assembly.
iv) The design of the insulator shall be
such that stresses due to expansion
and contraction in any part of the
insulator shall not lead to deterioration.
The porcelain shall not engage directly
with hard metal. Shape of the insulator
should be such that it facilitates easy
cleaning by normal methods.
All malleable iron steel work, steel bolts and
nuts and flanges shall be hot dip galvanized in
accordance with IS:2629 with latest
amendment thereof.
Vendor quality plan
Inspection point
To be submitted for purchaser approval.
To be mutually identified and agreed in
quality plan.
PROGRESS REPORTING
4.1
Out Line Document
4.2
Detailed Progress Report
To be submitted for purchase approval for
outline of production, inspection, testing,
inspection, packing, dispatch, documentation
programme.
To be submitted to purchaser once a month
containing
i)
ii)
iii)
iv)
v)
299
Progress on material procurement
Progress on fabrication (As applicable)
Progress on assemble (As applicable)
Progress on internal stage inspection
Reason
for any delay in total
programme
GN101-03-SP-49-00
vi) Details of test failures if any in
manufacturing stages
vii) Progress on final box up constraints /
Forward path
5.0
DRAWING, DATA & MANUALS
5.1.0
To be submitted along with bid
5.2.0
After award of contract, seller has
to submit mentioned drawings for
buyer’s Approval (A ) / Reference
300
Seller has to be submitted :
i)
Tentative GA /cross sectional
drawing of product showing all the
views / sections
ii)
Detailed reference list of customers
already using the offered product
during the last 5 years with particular
emphasis on units of similar design
and rating
iii)
Completely filled GTP
iv)
Deviations from this specification.
Only deviations approved in writing
before award of contract shall be
accepted.
v)
Details of manufacturer’s quality
assurance
standards
and
programme and ISO 9000 series or
equivalent national certification
vi)
Type test report from CPRI/ERDA
shall be submitted for the type , size
& rating of product / equipment
offered along with bid in case the
type test report for identical product
is not available then type report of
higher size / rating shall be
submitted for review. They shall be
considered valid 5 years from date of
test.
vii)
Complete product catalogue and
manual along with the bid.
viii)
Recommended spare parts and
consumables items for 5 years of
operation with prices and spare parts
catalogue with list for future
requirements.
i)
Programme for production and
testing (A)
ii)
Guaranteed Techinal Particulars (A)
GN101-03-SP-49-00
(R)
iii)
iv)
v)
vi)
vii)
viii)
ix)
x)
xi)
5.3.0
Submittals
dispatch
required
prior
to
xii)
i)
ii)
iii)
5.4.0
5.5.0
6.0
Calculations to substantiate choice of
electrical , structural , mechanical
component size / ratings (A)
Detailed dimensional drawing for all
components, general arrangement
drawing showing detailed component
layout and the detailed schematic
and
wiring
drawings
for
all
components (like marshalling box)
Terminal arrangement & cable box
details etc. (as applicable) (A)
Drawing for major components (A)
Rating & Diagram plate (A)
Detailed loading drawing to enable
the buyer to design and construct
foundations (as applicable ) (R)
Transport / Shipping dimensions with
weights,
wheel
base
details,
untanking height etc. (As applicable )
(R)
List of makes of all fittings and
accessories (A)
Detailed
installation
and
commissioning instructions ( R)
Quality plan
Inspection and test reports, carried
out in manufacturer’s work (R )
Test certificates of all bought out
items
Operation
and
maintenance
instruction as well as trouble
shooting chart / manuals.
iv)
Standard size paper A0, A1 , A2, A3, A4
Drawing and document size
No of drgs./Documents required at
diffderent stages
As per Annexure A scope of supply
INSPECTION & TESTING
6.1.0
6.2.0
Inspection and Testing
during manufacture
Routine tests
Tests shall be carried out in accordance with IS 2544
301
GN101-03-SP-49-00
7.0
6.3.0
Type Tests
6.4.0
Acceptance test
6.5.0
Sampling
a) On one post insulator of each rating and type
tested from CPRI/ERDA, reports to be submitted.
b) All the test as per IS 2544
c) In case the product is never type tested earlier,
seller has to conduct the type tests from
CPRI/ERDA test labs on BSES order at their own
cost, before commencement of supply.
d) Power frequency withstand test to be carried out
on selected sample at the time of acceptance test.
To be performed in presence of Purchaser at manufacturer
works:i)
Verification of dimensions
ii)
Temperature cycle test
iii)
Mechanical strength test
iv)
Puncture test
v)
Porosity test
vi)
Galvanising test
The number of post insulators or post insulator units to be
selected at random from the lot for acceptance tests shall
be in accordance with Table 3, IS 2544
PACKING , SHIPPING, HANDLING AND STORAGE
7.0.0
7.1.1
Packing
Packing protection
7.1.2
Packing for accessories
and spares
Packing identification
label
7.1.3
7.1.4
Shipping
Against corrosion , dampness, heavy rains, breakage and
vibration
Robust wooden non returnable packing case with all the
above protection and identification labels.
In each packing case, following details are required :
i) Individual serial number
ii) Purchaser’s name
iii) PO number (along with SAP item code , if any) &
date
iv) Equipment Tag no. (if any)
v) Destination
vi) Manufacturer / Supplier’s name
vii) Address of manufacturer’s / supplier’s its agent
viii) Description and quantity
ix) Country of origin
x) Month and year of manufacturing
xi) Case measurement
xii) Minimum failing load in kg
xiii) Gross and net weight in kilograms
xiv) All necessary slinging and stacking instructions.
i)
The bidder shall ascertain at an early date and
definitely before the commencement of
manufacture, any transport limitations such as
302
GN101-03-SP-49-00
7.1.5
Handling and Storage
weights, dimensions, road culverts, overhead
lines, free access etc. from the manufacturing
plant to the project site, and furnish to the
purchaser confirmation that the proposed
packages can be safely transported, as normal
or oversize packages, upto the plant site. Any
modification required in the infrastructure and
cost thereof in this connection shall be brought
to the notice of the Purchaser.
ii)
The seller shall be responsible for all transit
damage due to improper packing.
Manufacturer instruction shall be followed. Detail
handling & storage instruction sheet / manual need to be
furnished before commencement of supply.
8.0 DEVIATIONS
Deviation from this specification shall be started in writing with the tender by reference to the
specification clause/ DTP/Drawing and a description of the alternative offer. In absence of such a
statement, it will be assured by the Buyer that the seller complies fully with this specification.
Note: Bidder shall furnish MQP along with technical bid and shall submit required
guaranteed technical particulars as per attached Annexure - C
303
GN101-03-SP-49-00
Annexure –A
1.0
Scope of supply
The scope of supply shall include following
1.1
Sr. No.
1.0
1.2
1.3
1.4
1.5
Design, engineering, manufacture, assembly, testing at manufacture’s works,
packing, transportation and delivery to site, supervision of erection, testing at site
& commissioning and submission of complete documentation.
Description
Fully assembled solid core post insulators with all
major parts
Fixing Bolts for insulators
Routine testing as per this specification
Type testing as per this specification
Submission of Documentation as detailed below
Scope of Supply
YES
YES
YES
YES
YES
1.2
Supervision of testing & commissioning of post insulators on site
1.3
BOQ as followingSr. No.
Purchaser
Equipment Tag No.
/ SAP code
1
2
3
4
5
2.0
Location / Substation
name
Unit
Quantity
e.g. Santacruz
e.g. Alaknanda
No
No
e.g. 1
e.g. 1
Submission of documents
Submission of drawing, calculations, manual, catalogues, test report shall be as follows
Along with offer
Drawing
3 copies (Typical
drgs)
Calculations
3 copies
(Typical)
1 copy
Catalogues
Instruction
manual
Test Report
For Approval
after award of
contract
4 copies
Final after
approval
Remarks
6 copies + 1
soft copy in CD
4 copies
6 copies + 1
soft copy in CD
6 copies + 1
soft copy in CD
6 copies + 1
soft copy in CD
6 copies + 1
soft copy in CD
See clause 5.0
for various
drawing required
See clause 5.0
for details
1 copy
2 copy
304
Type test and
sample routine
test reports
GN101-03-SP-49-00
3.0
3.1
3.2
3.3
Delivery Schedule
Delivery Period start date
Delivery Period end date
Material dispatch clearance
-
from data of purchase order
as agreed with supplier
after inspection by purchaser and written dispatch
Clearance for purchaser
305
GN101-03-SP-49-00
Annexure – B
2.0.0
a)
b)
c)
d)
e)
f)
g)
SERVICE CONDITIONS
Delhi Atmospheric conditions
Average grade atmosphere
Maximum altitude above see level
Ambient Air temperature
Maximum ambient air temperature
Relative Humidity
Thermal Resistivity of Soil
Seismic Zone
Rainfall
Wind Pressure
Heavy polluted , dry
1000 M
Highest 50 deg C, Average 40 deg C
0 deg C
100 % Max
150 deg. C cm/W
4 as per IS 1893
750 mm concentrated in four months
195 Kg/m2 up to 90 M elevation as per IS
875-1975
306
GN101-03-SP-49-00
Annexure C: GURANTEED TECHNICAL PARTICULARS FOR 66 KV Solid Core
Post Insulators
Sr.
No.
Description
Data By Purchaser
1.0
Highest system voltage
72.5 kV
2.0
Height of unit
As per IS 2544 and IS
5350
3.0
Bending Strength (min.failing
load)
As per IS 2544
As per IS 2544
4.0
Tensile Strength
5.0
Compression Strength
6.0
Torsion Strength
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
Power frequency flashover
voltage
a.)DRY
b.) WET
Impulse Flashover Voltage
One minute power frequency
Voltage
a.)DRY
b.) WET
Power frequency puncture
voltage
Visible discharge Voltage
Creepage distance
a.) TOTAL
b.)PROTECTED
Diameter of insulating part
Top metal fitting pitch circle
diameter (PCD)
Bottom metal fitting pitch circle
diameter (PCD)
All ferrous parts hot dip
galvanised (as per IS 2629)
Suitable for hot line washing
As per IS 2544
As per IS 2544
As per IS 2544
a.) 150kV
b.) 140kV
325 kV
As per IS 2544
As per IS 2544
As per IS 2544
31 mm/kV
YES
YES
307
Data By Supplier
GN101-03-SP-49-00
Annexure –D RECOMMENDED SPARES (DATA BY SUPPLIER)
List of recommended spares as following –
Sr. No.
1
2
3
4
5
6
Description of spare part
Unit
308
Quality
Specification for
Lighting High Mast
Specification no – GN101-03-SP-33-00
Prepared by
Name
Sign
Reviewed by
Name
Approved by
Sign
Name
Rishabh
Gaurav
Devendra
Lohiya
Sharma
Sharma
309
Rev No.
Date
00
04.01.2012
Sign
GN101-03-SP-33-00
1.0
Scope of supply
This specification covers the requirement of design, manufacture and testing of 12M, 16M and 20M
high mast along with accessories and requisite hardware. The scope also includes erection,
installation and associated civil work like foundation etc.
2.0
Codes & Standards
All standards, specifications, and codes of practice referred to herein shall be the latest edition
including all applicable official amendments and revisions as applicable.
IS: 5
1994
IS:694
1990
IS:800
1984
IS:802
1978
Part-2
IS:2062
IS: 2551
1987
Part-3
1992
1982
IS:2629
1985
IS :2633
1986
IS: 875
IS :3961
IS :5133
IS: 5831
IS :8130
IS :10810
IS:13703
IS:13703
BS EN
10-027
(part-1)
BS EN
10-027
(part-2)
BS 5135
BS-EN
10-027
1967
Part-2
1969
Part-1
1984
1984
1984
1993
Part-1
1993
Part-2
Colour for ready mixed paints and enamels.
PVC insulated cables for working voltages upto and including
1100V.
Code of practice for general construction in steel.
Code of practice for use of structural steel in Overhead
transmission line towers. Part-2 Fabrication, galvanising,
inspection and packing.
Code of practice for design loads(other than earthquake) for
buildings and structures: Wind loads
Steel for general structural purposes.
Danger notice plates.
Recommended practice for hot dip galvanising on iron and
steel.
Methods for testing uniformity of coating of zinc coated
articles.
Recommended current ratings for PVC insulated cables. Part2: PVC insulated and PVC sheathed heavy duty cables.
Boxes for enclosure of electrical accessoriesPart-1: steel and cast iron boxes.
PVC insulation and sheath of electric cables.
Conductors for insulated electric cables and flexible cords.
Method of tests for cables.
Low voltage fuses for voltages not exceeding 1000V AC or
1500V DC .Part-1:General requirements
Low voltage fuses for voltages not exceeding 1000V AC or
1500V DC .Part-2:Supplementary requirements for fuses for
industrial applications
1992
Designation systems for steel: steel names, principal symbols
1992
Designation systems for steel: steel numbers
National Electrical Code.
Indian Electricity rules(relevant safety regulation of CEA) and
acts
310
GN101-03-SP-33-00
3.0
Service Conditions
Equipment to be supplied against this specification shall be suitable for satisfactory continuous
operation under the following tropical conditions.
Maximum Ambient Temperature (Degree C)
50
Maximum temperature in shade (Degree C)
45
Min. Temperature of Air in Shade (Degree C)
-10
10 To 100
Relative Humidity (Percent)
Maximum annual rain fall (mm)
1450
Maximum Wind pressure (Kg/Sq. M.)
150
Maximum altitude above mean sea level (Meters)
3000
50
lsoceranic level (days per year)
Seismic level (Horizontal Acceleration)
Moderately hot and humid tropical climate
0.3g
conducive to rust and fungus growth
4.0
Technical Requirement
4.1. Structure
The High mast shall be of continuously tapered, galvanised polygonal cross section, at least
20 sided, presenting a good and pleasing appearance, based on proven In-Tension design,
conforming to the standards referred to above, to give an assured performance, and reliable
service. The structure shall be suitable for wind loading as per IS - 875 Part -III, 1987.
4.2. Construction
The mast shall be fabricated from special steel plates, conforming to BS-EN10-027, cut and
folded to form a polygonal section and telescopically jointed and welded. The welding shall
be in accordance with BS-5135. The sections are joined together by slip-stressed-fit
method. No site welding shall be done. Only bolted joint shall be done on the mast at the
site. The minimum over lap distance shall be 1.5 times the diameter at penetration. The
dimensions of the mast shall be decided based on proper design and accordingly design
calculations shall be submitted for review / approval.
The mast shall be provided with fully penetrated flange, free from any lamination or
incursion. The welded connection of the base flange shall be fully developed to the strength
311
GN101-03-SP-33-00
of the entire section. The base flange shall be provided with supplementary gussets
between the bolt holes to ensure elimination of helical stress concentration. The entire
fabricated mast shall be hot dip galvanised both internally and externally.
4.3. Door Opening
An adequate door opening shall be provided at the base of the mast and the opening shall
be such that it permits clear access to equipment like winches, cables, plug and socket, etc.
and also facilitate easy removal of the winch. The door opening shall be complete with a
close fitting, vandal resistant, weatherproof door, provided with a heavy-duty double internal
lock with special paddle key.
4.4. Dynamic Loading for the Mast
The mast structure shall designed as per TR No-7 of Institutions of lightning engineers of
UK and shall be suitable to sustain maximum reaction arising from a wind speed as per IS875 (three second gust), and is measured at a height of 10 meters above ground level.
4.5. Lantern Carriage
A fabricated Lantern Carriage shall be provided for fixing and holding the flood light fittings
and control gear boxes. The lantern Carriage shall be of special design and shall be of
steel tube construction, the tubes acting as conduits for wires, with holes fully protected by
grommets. (The lantern carriage tube should not be used as conduit. Separate flexible
conduits are used from CG Boxes to the Flood Light Fixtures) The Lantern Carriage shall
be designed and fabricated to hold the required number of flood light fittings and the control
gear boxes, and also have a perfect self balance.
The Lantern Carriage shall be fabricated in two halves and joined by bolted flanges with
stainless steel bolts and plastic lock type stainless steel nuts to enable easy installation or
removal from the erected mast. The inner lining of the carriage shall be provided with
protective PVC arrangement, so that no damage is caused to the surface of the mast during
the raising and lowering operation of the carriage. The entire Lantern Carriage is hot dip
galvanised after fabrication.
4.6. Junction Box
The junction box shall be cast aluminium or SS, weather proof IP67 junction box. It shall be
provided on the Carriage Assembly as required, from which the inter-connections to the
designed number of the flood light luminaries and associated control gears fixed on the
carriage, is made.
312
GN101-03-SP-33-00
4.7. Raising and lowering mechanism
It will be necessary to lower and raise the Lantern Carriage Assembly to install and maintain
the luminaries and lamps. To enable this, a suitable Winch Arrangement shall be provided,
with the winch fixed at the base of the mast and the specially designed head frame
assembly at the top.
4.8. Winch
The winch shall be of completely self-sustaining type, without the need for brake, shoe,
springs or clutches. Each driving spindle of the winch is positively locked when not in use.
Individual drum also should be operated for the fine adjustment of lantern carriage.
The
capacity, operating speed, safe working load, recommended lubrication and serial number
of the winch shall be clearly marked on each winch.
The gear ratio of the winch shall be 53 : 1 or as recommended by manufacturer. However,
the minimum working load shall not be less than 750 kg. The winch shall be self-lubricating
type by means of an oil bath and the oil shall be readily available grades of reputed
manufacturers and details of the oil shall be furnished.
The winch drums shall be grooved to ensure perfect seat for stable and tidy rope lay, with
no chances of rope slippage. The rope termination in the winch shall be such that distortion
or twisting is eliminated and at least 5 to 6 turns of rope remains on the drum even when the
lantern carriage is fully lowered and rested on the rest pads. It should be possible to operate
the winch manually by a suitable handle and/or by an external power tool. It would be
possible to remove the double drum after dismantling, through the door opening provided at
the base of the mast. Also, a winch gearbox for simultaneous and reversible operation of
the double drum winch shall be provided as part of the contract.
The winch shall be type tested in a reputed test lab/ Institution and the test certificates shall
be furnished before supply of materials. Test certificate shall be furnished by the bidder
from the original equipment manufacturer, for each winch in support of the maximum load
operated by the winch.
4.9. Head Frame
The head frame, which is to be designed, as a capping unit of the mast, shall be of welded
steel construction, galvanised both internally and externally after assembly. The top pulley
shall be of appropriate diameter, large enough to accommodate the stainless steel wire
ropes and the multi-core electric cable.
The pulley block shall be made of corrosion
resistant material, and is of the cast Aluminium Alloy (LM-6) or SS.
313
Pulley made of
GN101-03-SP-33-00
synthetic materials such as Plastic or PVC is not acceptable. Self-lubricating bearings and
stainless steel shaft shall be provided to facilitate smooth and maintenance free operation
for a long period. The pulley assembly shall be fully protected by a canopy galvanised
internally and externally.
Close fitting guides and sleeves shall be provided to ensure that the ropes and cables do
not dislodge from their respective position in the grooves.
The head frame shall be
provided with guides and stops with PVC buffer for docking the lantern carriage.
4.10 Stainless Steel Wire Ropes
The suspension system shall essentially be without any intermediate joint and shall consist
of only non-corrodable stainless steel of AISI - 316 or better grade.
The stainless steel wire ropes shall be of 7/19 construction, the central core being of the
same material. The overall diameter of the rope shall be more than 6 mm keeping in mind
contingency. The breaking load of each rope shall not be less than 2350 kg. The design
shall have a factor of safety over 5 for the system at full load. The end constructions of
ropes to the winch drum shall be fitted with talurit.
The thimbles are secured on ropes by compression splices. Two continuous lengths of
stainless steel wire ropes are used in the system and no intermediate joints are acceptable
in view of the required safety. No intermediate joints, either bolted or else, shall be provided
on the wire ropes between winch and lantern carriage.
4.11 Electrical System, Cable and Cable Connections
A suitable terminal box shall be provided as part of the supply at the base compartment of
the high mast for terminating the incoming cable.
The electrical connections from the
bottom to the top shall be made by special trailing cable. The cable is EPR insulated and
PCP sheathed to get flexibility and endurance. Size of the cable is minimum 5 core 2.5 sq
mm copper, in case of failure of any core 2 spare cores shall be available. The cable shall
be of reputed make.
At the top necessary weatherproof junction box to terminate the
trailing cable shall be provided. Connections from the top junction box to the individual
luminaries is made by using 3 core 1.5 sq mm flexible PVC cables of reputed make. The
system shall have in built facilities for testing the luminaries while in lowered position.
Also, suitable provision shall be made at the base compartment of the mast to facilitate the
operation of externally mounted, electrically operated power tool for raising and lowering of
the lantern carriage assembly. The trailing cables of the lantern carriage rings shall be
terminated by means of specially designed, metal clad, multi pin plug and socket provided
in the base compartment to enable easy disconnection when required.
314
GN101-03-SP-33-00
4.12 Power Tool for the Winch
A suitable, high-powered, electrically driven, externally mounted power tool, with manual
over ride, together with an operating stand shall be supplied for the raising and lowering of
the lantern carriage for maintenance purposes. The speed of the power tool may preferably
of slow speed, of 1.5 to 1.8 m/minute, so that vibrations associated with high speed
operation are avoided. The power tool shall be single speed, provided with a motor of the
required rating, suitable for hand/stand operation.
The power tool shall be supplied
complete with push button type remote control switch, together with 6 (six) meters of power
cable, so that the operations can be carried out from a safe distance of 5 (five) meters. The
capacity and speed of the electric motor used in the power tool shall be suitable for the
lifting of the design load installed on the lantern carriage.
The power tool stand shall be so designed that it will not only be self-supporting but also
aligns the power tool perfectly with respect to the winch spindle during the operations. Also,
a handle for the manual operation of the winches in case of problems with the electrically
operated tool shall be provided and shall incorporate a torque-limiting device.
A separate torque-limiting device to protect the wire ropes from over stretching shall be
provided. It shall be mechanical with suitable load adjusting device. The torque limiter is a
requirement as per the relevant standards in view of the overall safety of the system.
4.13 Lightning Finial
One number heavy-duty hot dip galvanised lightning finial shall be provided for each mast.
The lightning finial shall be minimum 1.2 m in length and shall be provided at the centre of
the head frame. It shall be bolted solidly to the head frame to get a direct conducting path
to the earth through the mast. The lightning finial shall not be provided on the lantern
carriage under any circumstances in view of safety of the system.
4.14 Aviation Obstruction Lights:
Based on site and project specific requirements, 2 nos. Low Intensity Type-B (as per Table
6.3 of Volume-1, Annexure-14 of ICAO Guideline for Aerodrome Design & Operations) LED
type aviation obstruction lights of reliable design and reputed manufacturer shall be
provided on top of each mast.
315
GN101-03-SP-33-00
4.15 Earthing Terminals:
Suitable earth terminal pad using twin 12 mm diameter stainless steel bolts shall be
provided at a convenient location on the base of the Mast, for lighting and electrical earthing
of the mast.
4.16
Luminaries:
The 400 W non-integral floodlight luminaries with HPSV lamp shall be provided with each
mast. Optical compartment of the luminary shall be IP 66 and control gear compartment
shall be IP 54 or better. Bajaj, Crompton and Philips make luminaries are approved.
Detailed technical brochure shall be provided along with the bid.
4.17 Feeder Pillar:
Feeder pillar required for feeding power to the Lighting mast shall also be supplied along
with the mast and its accessories. The feeder pillar is fed from the main switchgear / main
lighting distribution board. The outgoings of this feeder pillar are connected to the MCBs in
the mast. The feeder pillar shall be FLP or WP IP 54 with rain protection canopy in
galvanised CRCA sheet or cast Aluminium body (for FLP) and finished with two coats of
epoxy primer and grey enamel paint of shade 631 of IS-5. The feeder Pillar shall comprise
of incoming 32 Amp TPN switch, HRC fuses, outgoing 25 Amp SP MCB, Time switch and
contactor for automatic on & off of circuit with manual override, TP MCB for power tool
contactors for reversing the motor and overload Protection of motor. Feeder pillar shall be
mounted on suitable foundation near to the mast.
5.0
Tests
All type test certificates for the tests listed in the relevant standards, conducted on
identical masts shall be submitted to BSES for approval. Routine tests & acceptance tests as
per relevant IS shall be conducted as per approved Quality Plan.
6.0
Marking / Name Plate
The high mast shall be provided with “BSES” insignia with anodized aluminium plate.
Anodized plate showing 24X7 customer care number shall also be provided. Name plate
shall include manufacturer name, date of manufacturing, warranty period and other details
as per standards.
316
GN101-03-SP-33-00
Annexure A: Guaranteed Technical Parameters
Sl. No.
1
2
2.1
2.2
2.2
2.3
Particulars
Name and address of
manufacturer
Overall height of high
mast
Make
Material of
construction of shaft
Cross section of mast
Number of sections
Minimum thickness of
shaft (mm)
2.3
2.4
2.5
Length of individual
section (mm)
Minimum Base and top
diameter
Type of joints
2.6
2.7
2.8
2.9
2.10
2.11
2.12
2.13
2.14
2.15
2.16
2.17
Length of overlap
Metal protection
treatment of fabricated
mast section
Thickness of
galvanizations
Size of opening door at
base
Type of locking
arrangement and door
construction
Details of struck board
inside
Size , material and
thickness of cable
termination box
Minimum size of base
plate diameter
Minimum size of base
plate thickness
Minimum size of
anchor plate thickness
Details of template
Data by purchaser
12 mtrs
Data by seller
16 mtrs
20 mtrs
Grade S355 J O as per BSEN 10025 or
equivalent
20 sided, regular continuously tapered
polygonal
One
Two
Two
4 mm
Bottom section: Bottom
section: 5
5 mm
mm
Top section:
Top section:
4mm
4mm
12000 mm
10900mm /
10375mm /
5850mm
10375mm
500mm (A/F)
340mm (A/F) 450mm (A/F)
and 150 mm
and 150 mm and 150 mm
(A/F)
(A/F)
(A/F)
Telescopic slip Telescopic
No site
joint, stress
slip joint,
joints, mast
fitted
stress fitted
should be
delivered in
a single
section
N/A
750mm
750mm
Hot dip galvanization through single dipping
process
Minimum 85 microns as per IS:2629
Approx. 250 X 1200 mm
Anti vandal type
Insulated base board
540 mm
(min.)
25 mm thick
650 mm (min.)
680 mm
(min.)
8 mm
Same as anchor plate but 2 mm thick
317
GN101-03-SP-33-00
Sl. No.
3
3.1
3.2
3.3
3.4
3.5
3.6
4
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
4.10
5
5.1
Particulars
Dynamic loading as
prevailing at site
maximum wind
pressure (basic wind
speed)
Maximum gust speed
time
Height above ground
level at which wind
speed is consider
Factor of safety for
wind load
Factor of safety for
other load
Application standard
for mast design
Foundation details
Type of foundation
Size of foundation
Design safety factor
Considered wind
speed
Depth of foundation
Average soil bearing
capacity
Numbers of foundation
bolts
PCD of foundation
bolts
Type of foundation bolt
Bolt diameter / length
Data by seller
47m/s as per IS:875, p-3
3 seconds
10 mtrs
1.25
1.15
Technical report #7:2000 by ILE, UK
Open raft shallow footing or pile as applicable
as per design conforming to IS:456
2
180 m /s
As per requirement of design
As per site condition
6 nos
8 nos
440 mm (min.)
550 mm
(min.)
Tor steel
25mm dia / 750
mm
600 mm
(min.)
32mm dia /
1325 mm
40mm dia /
1375 mm
Suitable to
carry up to 4
nos. floodlights
1200 mm
1200 mm
Construction
MS Channels /
Tube, Hot dip
galvanized
Channels
75X40X4mm
thick
Channels
75X40X4mm
thick
Number of joints
As per
manufacturer's
standard
design
(2 segments as
per Cl no.4.5)
3 segments
(2 segments
as per Cl
no.4.5)
3 segments
(2 segments
as per Cl
no.4.5)
Lantern Carriage
Diameter of Carriage
Ring
5.2
5.3
5.4
Data by purchaser
Buffer arrangement
between carriage and
mast
Rubber padded guide ring provided
318
GN101-03-SP-33-00
Sl. No.
5.5
5.6
6
Particulars
Load carrying capacity
Total weight of
assembly with fitting
Winch
500 kg
as per design
Data by purchaser
750 kg
750 kg
Make of winch
6.1
6.2
6.5
6.3
6.4
6.6
6.7
6.8
6.9
6.10
6.11
7
7.1
7.2
Number of drums/
winch
Gear Ratio
Capacity
Method of operation
Operating speed
Lubricant Arrangement
Type of lubricant
Material of
construction of gear
Tested load per drum
SWL of winch at 410
rpm
Wire rope
Make
Grade
Number of ropes
7.3
7.4
7.5
7.6
7.7
8
8.1
8.2
8.3
8.4
8.5
9
9.1
9.2
10
10.1
10.1.1
10.1.2
10.1.3
10.2
10.2.1
Construction
Diameter of Wire rope
Factor of safety
Breaking capacity
Cable
Type
Material
Make
Current carrying
capacity
conductor size
Torque limiter
Lifting capacity
Adjustable / non
adjustable
Lantern and Fixture
Type Of Lamp
Wattage
Make
Model Number
Housing
Material
Double drum
SWL 500 kg
SWL 750 kg
Manual / power tool
Permanent oil bath
Phosphorus Bronze / EN 19
500 kg
500 kg SWL
AISI 316
3 nos / 5mm
(three wire
rope)
7./19
5mm
Not less than 5
750 kg
750 kg SWL
3 nos / 6 mm (three wire
rope)
6mm
Not less than 6
Minimum 2350Kgs. X 2
EPR coated PCP sheathed
Multicore copper conductor
Finolex, torrent, Polycab, KEI, Havells
As per IS 9968 (Part - 1), 1998
5CX2.5 sqmm.
Upto 500 kg
Adjustable
Upto 750 kg
HPSV, Asymetrical IP65 fitting
400W
Single piece gravity die-cast
Aluminium alloy: LM6
319
Data by seller
GN101-03-SP-33-00
Particulars
Ingress protection
For optical
compartment
For control gear
compartment
Dimensions of lantern
Weight of lantern with
control gear
Lamp Cover
Toughened glass
Class of glass
Nominal thickness
Perspex thickness
Material of gasket
AA/SSQ
5mm
2.5mm+/-0.4 mm
Slicon Rubber/ Neoprene
Lamp holder
Screw type/three pin type
Material
Ballast
Ballast voltage
Minimum open circuit
voltage
Frequency
Current output(A), at
rated voltage
Voltage to current
ratio ( ) +/-0.5%
Watt loss ( W )
Porcelain
Conventional/Open type/ VI/VPI
240V AC
198V
Power factor of
lantern
Value of capacitor
Igniter
Reflector
More than 0.95 lag
To be specified
Three wire
Anodised/POT
Angle of tilt of lamp
To be specified
More than 70%
10.9.3
Downward light output
ratio
Angle of throw
10.9.4
Angle of spread
As per clause 5.12.6
Luminous intensity in
C = 0°
plane at γ = 90°
Luminous intensity in
C = 0°
plane at γ = 80°
Make of fixture
Less than 10 Cd/klm
Sl. No.
10.2.2
10.2.3
10.2.4
10.2.5
10.2.6
10.3
10.3.1
10.3.2
10.3.3
10.3.4
10.4
10.5
10.5.1
10.6
10.6.1
10.6.2
10.6.3
10.6.4
10.6.5
10.6.6
10.7
10.7.1
10.8
10.9
10.9.1
10.9.2
10.9.5
10.9.6
Data by purchaser
Data by seller
IP:65/IP:66
IP:54 or better
As per design standard
As per design standard
Perspex/Toughened glass
50 Hz
To be specified
As per clause 5.12.5
Less than 30 Cd/klm
Bajaj, GE, Philips and CGL
10.10
10.10.1
Nos of fixture provided
with high mast
4
5
320
6
GN101-03-SP-33-00
Sl. No.
10.10.2
11
11.1
11.2
11.3
11.4
12
13
14
15
Particulars
Type of fixture
Others
Make of 24 hour
Differential Timer
Switch
Make of 32A TPN
MCB
Make of 32A Contactor
Earth pit
GTP and Drawing
Submitted
Type Tests Submitted
Technical Brochure of
luminaries submitted
Operation and
maintenance manual
submitted
Data by purchaser
Weather proof
Legrand/ GE/ Schnider/ L&T
GE/ Hager/ Legrand/ Schnider
L&T/ Schnider/ GE
Two numbers of treated earth pit with each
mast
Yes/No
Yes/ No
YES / NO
YES / NO
321
Data by seller
BSES Bhawan, Nehru Place, New Delhi- 19
TECHNICAL SPECIFICATION
FOR
NITROGEN INJECTION FIRE PROTECTION
Prepared by
Tanu Srivastava
Reviewed by
Meenakshi
Approved by
Kiran K Alla
Rev: 0
Date: 07.02.2014
322
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for Nitrogen Injection Fire Protection System
1.0.0
SUPPLY AND SCOPE WORK
1.1.0
Design, manufacture, testing of the assembled system at manufacturer’s works before
dispatch, packing and supply at site, erection and commissioning of the Nitrogen
Injection Fire Protection system
1.2.0
Any modifications if required for installation of Nitrogen Injection Fire Protection system
on existing power transformer of various rating ranging from 10MVA to 25MVA shall be in
scope of bidder. All material, tools, tackles, hardware, testing equipments and manpower
required for the modification shall be in scope of bidder except for any type of civil work like
fire wall, soak pit etc. Bidder if feels shall conduct physical survey of the power
transformer to check feasibility and quantum of work involved.
2.0.0
INTRODUCTION
Nitrogen Injection Fire Protection System (NIFPS) shall use nitrogen as fire quenching
medium. The protective system shall prevent transformer / Reactor oil tank explosion and
possible fire in case of internal faults. In the event of fire by external causes such as
bushing fire, OLTC fires, fire from surrounding equipment etc, it shall act as a fast and
effective fire fighter without any manual intervention. It shall accomplish its role as fire
preventer and extinguisher without employing water and / or carbon dioxide. Fire shall be
extinguished within 3 minutes (Maximum) of system activation and within 30 seconds
(maximum) of commencement of nitrogen injection.
3.0.0
APPLICABLE CODES AND STANDARDS
The design and installation of the complete fire protection system shall comply with the latest
applicable Indian standards
a)
IS 10028 (Part II) : Code of practice for selection, installation, and maintenance of
transformer
b) Tariff Advisory Committee : Regulations for the electrical equipment of buildings
c)
National fire Codes 1993 of National Fire Protection Association (NFPA) USA
d) Central Electricity Authority, The Gazette of India, Extraordinary 2010 :
Safety provisions for electrical installations and apparatus of voltage exceeding 650V
4.0.0
ACTIVATION OF THE FIRE PROTECTIVE SYSTEM
Mal-functioning of fire prevention / extinguishing system could lead to interruption in power
supply. The supplier shall ensure that the probability of chances of malfunctioning of the fire
protective system is practically zero. To achieve this objective, the supplier shall plan out his
scheme of activating signals which should not be too complicated to make the fire protective
system inoperative in case of actual need and should not be dependent on auxiliary power
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BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for Nitrogen Injection Fire Protection System
source. The system shall be provided with automatic control for fire prevention and fire
extinction without any manual intervention. Besides automatic control, remote electrical push
button control at Control box and local manual control in the fire extinguishing cubicle shall
also be provided. The following electrical-signals shall be required for activating the fire
protective system under prevention mode / fire extinguishing mode.
4.1.0
Auto Mode
4.1.1
For prevention of fire :
Differential relay operation + Buchholz relay paralleled with pressure relief valve or RPRR
(Rapid Pressure Rise Relay) + Tripping of all or one circuit breakers (on HV & LV/IV side)
associated with transformer / reactor is the pre-requisite for activation of system. The system
shall have sufficient Input modules.
4.1.2
For extinguishing fire :
Fire detector + Buchholz relay paralleled with pressure relief valve (PRV) or sudden
pressure relay (SPR) + tripping of all circuit breakers (on HV & LV/IV side) associated with
transformer / reactor is the pre-requisite for activation of system.
4.2.0
Manual Mode (Local / Remote electrical)
Tripping of all circuit breakers (on HV & LV/IV side) associated with transformer/reactor is the
pre-requisite for activation of system.
4.3.0
Manual Mode (Mechanical)
Tripping of all circuit breakers (on HV & LV/IV side) associated with transformer /
Reactor is the pre-requisite for activation of system.
The system shall be designed to be operated manually in case of failure of power
supply to fire protection system.
5.0.0
GENERAL DESCRIPTION
Nitrogen injection fire protection system should be a dedicated system for each
oil filled transformer / reactor. It should have a Fire Extinguishing Cubicle (FEC)
placed on a plinth at 5-7m away (as per statutory requirement) from transformer /
reactor or placed next to the fire wall if fire wall exists. The FEC shall be connected to the top
of transformer / reactor oil tank for depressurization of tank and to the oil
pit as per Indian standard and CBIP from its bottom through oil pipes. The fire
extinguishing cubicle should house a pressurized nitrogen cylinder(s) which is
connected to the oil tank of transformer/reactor oil tank at bottom. The Transformer
Conservator Isolation Valve (TCIV) is fitted between the conservator tank and
Buchholz relay.
Cable connections are to be provided from signal box to the control box in the control room,
control box to fire extinguishing cubicle, TCIV to signal box and any other wiring to ensure
proper functioning of the fire protection system. Fire detectors placed on the top of
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BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for Nitrogen Injection Fire Protection System
transformer/reactor tank are to be connected in parallel to the signal box by Fire survival
cables. Control box is also to be connected to relay panel in control room for receiving
system activation signals. All panel or control equipments shall be fire proof so as to ensure
that they do not fail themselves in event of fire.
6.0.0
OPERATION
On receipt of all activating signals, the system shall drain pre-determined volume of
hot oil from the top of tank (i.e top oil layer), through outlet valve, to reduce tank
pressure by removing top oil and simultaneously injecting nitrogen gas at high
pressure for stirring the oil at pre-fixed rate and thus bringing the temperature of top
oil layer down. Transformer conservator isolation valve blocks the flow of oil from
conservator tank in case of tank rupture / explosion or bushing bursting. Nitrogen
occupies the space created by oil drained out and acts as an insulating layer over oil in the
tank and thus preventing aggravation of fire.
7.0.0
SYSTEM COMPONENTS
Nitrogen injection fire protection system shall broadly consist of the following components.
However, all other components which are necessary for fast reliable and effective working of
the fire protective system shall be deemed to be included in the scope of supply.
7.1.0
Fire Extinguishing Cubicle (FEC)
The FEC shall be made of CRCA sheet of 3 mm (minimum) thick complete with the
base frame, painted inside and outside with post office red colour (shade 538 of IS-5).It shall
have hinged split doors fitted with high quality tamper proof lock. The degree of protection
shall be IP55. The following items shall be provided in the FEC.
a.
b.
c.
d.
e.
f.
g.
h.
7.2.0
Nitrogen gas cylinder with regulator and falling pressure electrical contact manometer
Oil drain pipe with mechanical quick drain valve.
Control equipment for draining of oil of pre-determined volume and injecting regulated
volume of nitrogen gas
Pressure monitoring switch for back-up protection for nitrogen release
Limit switches for monitoring of the system
Butterfly valve with flanges on the top of panel for connecting oil drain pipe and nitrogen
injection pipes for transformer/reactors
Panel lighting (CFL Type)
Oil drain pipe extension of suitable sizes for connecting pipes to oil pit.
Control box
Control box is to be placed in the control room for monitoring system operation,
automatic control and remote operation. Control supply will be 50/220VDC (15%
tolerance) based on site requirement. The following alarms, indications, switches,
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BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for Nitrogen Injection Fire Protection System
push buttons, audio signal etc. shall be provided.
a.
System on
b.
TCIV open
c.
Oil drain valve closed
d.
Gas inlet valve closed
e.
TCIV closed*
f.
Fire detector trip *
g.
Buchholz relay trip
h.
Oil drain valve open*
i.
Extinction in progress *
j.
Cylinder pressure low *
k.
Differential relay trip
l.
PRV / SPR trip
m
. Master relay of Transformer/reactor trip
n.
System out of service *
o.
Fault in cable connecting fault fire detector
p.
Fault in cable connecting differential relay
q.
Fault in cable connecting Buchholz relay
r.
Fault in cable connecting PRV / SPR
s.
Fault in cable connecting transformer /reactor trip
t.
Fault in cable connecting TCIV
u.
Auto/ Manual / Off
v.
Extinction release on / off
w.
Lamp test
x.
Visual/ Audio alarm*
y.
Visual/ Audio alarm for DC supply fail *
Suitable provision shall be made in the control box, for monitoring of the system from
remote substation using the substation automation system.
7.3.0
Transformer Conservator Isolation Valve
Transformer conservator
isolation valve (TCIV) to be fitted in the conservator pipe
line,
between conservator and buchholz relay which shall operate for isolating the conservator
during abnormal flow of oil due to rupture / explosion of tank or bursting of bushing. The
valve shall not isolate conservator during normal flow of oil during filtration or filling or
refilling, locking plates to be provided with handle for pad locking. It shall have proximity
switch for remote alarm and indication glass window for visual inspection for physical
checking of the status of valve.
The TCIV should be of the best quality as malfunctioning of TCIV could lead to serious
consequence. The closing of TCIV means stoppage of breathing of transformer/reactor. Fire
survival cable connecting TCIV shall be terminated in transformer marshalling box.
7.4.0
Fire detectors
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The system shall be complete with adequate number of fire detectors (quartz bulb)
fitted on the top cover of the transformer / reactor oil tank. The system generates signal after
sensing higher temperature. The placing of fire detectors and numbers shall be designed
and finalized by bidder as per requirement.
7.5.0
Signal box
It shall be mounted away from transformer / reactor main tank, preferably near the
transformer marshalling box, for terminating cable connections from TCIV & fire
detectors and for further connection to the control box. The degree of protection shall
be IP55.
7.6.0
Cables
Fire survival cables (capable to withstand 750° C.) of 4 core x 1.5 sq. mm size for
connection of fire detectors in parallel shall be used. The fire survival cable shall
conform to BS 7629-1,BS 8434-1, BS 7629-1 and BS 5839-1,BS EN 50267-2-1 or
relevant Indian standards.
Fire Retardant Low Smoke (FRLS) cable of 12 core x 1.5 sq. mm size shall be used
for connection of signal box / marshalling box near transformer/reactor and FEC
mounted near transformer/reactor with control box mounted in control room.
Fire Retardant Low Smoke (FRLS) cable of 4 core x 1.5 sq. mm size shall be used for
connection between control box to DC and AC supply source, fire extinguishing
cubicle to AC supply source, signal box/ marshalling box to transformer conservator isolation
valve connection on transformer/reactor.
7.7.0
Pipes
Heavy duty pipe connecting the transformer/reactor tank for oil rain, and for nitrogen
injection shall be provided. Pipes connecting oil tank laid underground, shall be
preferably be used for interconnection. Pipes, complete with connections, flanges,
bends and tees etc. shall be supplied along with the system.
7.8.0
Other items
7.8.1
Oil drain and nitrogen injection openings with gate valves on transformer / reactor tank at
suitable locations.
Flanges with dummy piece in conservator pipe between Buchholz relay and conservator
Tank for fixing TCIV.
Fire detector brackets on transformer / reactor tank top cover.
Spare potential free contacts for activating the system i.e. in differential relay, Buchholz
relay, Pressure Relief Device / RPRR, Circuit Breaker of transformer/reactor
Pipe connections between transformer / reactor and FEC and between FEC and oil pit
required for collecting top oil.
Cabling for fire detectors mounted on transformer /reactor top cover
Inter cabling between signal box, control box and Fire Extinguishing Cubicle (FEC).
7.8.2
7.8.3
7.8.4
7.8.5
7.8.6
7.8.7
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7.8.8
7.8.9
All external cables from / to the system i.e. signal box to control box and control box to FEC
shall be provided by the purchaser. All internal cables within the system i.e.
between detectors / signal box / marshalling box / FEC / TCIV shall be in the scope of NIFPS
supplier.
Butterfly valves /Gate valves on oil drain pipe and nitrogen injection pipe which should be
able to withstand full vacuum.
Supports, signal box etc. which are to be painted with enamelled paint.
The doors, removable covers and panels shall be gasketted all round with neoprene
gaskets.
8.0.0
MANDATORY SPARES
Cylinder filled with Nitrogen of required
capacity per substation
Fire Detectors per transformer
Regulator assembly per sub-station
9.0.0
1 No.
3 No’s.
1 No.
TESTS
Reports of all type test conducted as per relevant IS/IEC standards in respect of
various bought out items including test reports for degree of protection for FEC /
control box / signal box shall be submitted by the supplier.
The supplier shall demonstrate the functional test associated with the following:
•
Fire Extinguishing Cubicle, Control Box.
•
Fire Detector.
•
Transformer Conservator Isolation Valve
The performance test of the complete system shall be carried out after erection of the system with
transformer at site.
10.0.0 DOCUMENTS TO BE SUBMITTED
10.1.0
To be submitted along with offer
10.1.1 General outline of the system.
10.1.2 Detailed write-up on operation of the offered protection system including
maintenance
and testing aspects / schedules.
10.1.3 Technical Data particulars (GTP), the format of which is attached in Annexure A of the
specification
10.1.4 Data regarding previous supplies, date of commissioning, performance feedback etc.
10.1.5 Document related to Type test / proof of design as required by statutory body /
electrical inspector
10.2.0 To be submitted after award of contract:
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Detailed dimensional layout drawing of the system with complete bill of materials,
clearances from ground and other live points, details of detectors, equipment layout
drawings, detailed drawings pertaining to signal box, control box, FEC equipment,
wiring and schemes, 4 sets of testing, commissioning, Operation and Maintenance
manual along with soft copies (in CDs) shall be submitted by the supplier.
11.0.0 PACKING, SHIPPING, HANDLING & SITE SUPPORT
The packing shall be fit to withstand rough
handling during transit and storage at
destination. The test set should be
properly protected against corrosion,
dampness & damage.
Robust non-returnable packing case with
all the above protection & identification
Label. Thebidder should get the packing
list approved before dispatching the
material.
On each packing case, following details
are required:
11.1.0
Packing Protection
11.2.0
Packing for accessories and
spares
11.3.0
Packing Identification Label
11.3.1
11.3.2
11.3.3
11.3.4
11.3.5
11.3.6
11.3.7
11.3.8
11.3.9
11.3.10
11.3.11
11.3.12
11.3.13
Individual serial number
Purchaser's name
PO number (along with SAP item code, if any) & date
Equipment Tag no. (if any)
Destination
Manufacturer / Supplier's name
Address of Manufacturer / Supplier / it’s agent
Description
Country of origin
Month & year of Manufacturing
Case measurements
Gross and net weight
All necessary slinging and stacking instructions
The seller shall be responsible for all
Shipping
transit damage due to improper packing.
Handling and Storage
Manufacturer
instruction
shall
be
followed.
Detail handling & storage instruction sheet / manual to be furnished before
commencement of supply.
11.4.0
11.5.0
11.6.0
12.0.0 DEVIATIONS
List of deviations shall be stated in writing with the tender by reference to the
Specification clause / GTP/ Drawing. In absence of such a statement, requirements of the
Specification shall be assumed to be met without exception by the bidder.
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TECHNICAL SPECIFICATION
FOR
PACKING & TRANSPORTATION
Prepared by
Rev: 0
Reviewed by
Date:
Approved by
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1.0
PACKING AND TRANSPORTATION
1.1
Packing shall be sturdy and adequate to protect all assemblies, components and accessories
from injury by corrosion, dampness, heavy rains, breakage and vibration encountered during
transportation, handling and storage at the plant site. All accessories, which are likely to get
damaged during transit if transported mounted on the equipment, shall be removed,
adequately packed and shipped separately. All openings shall be sealed. Spare parts shall
be packed separately and clearly marked. They shall be specially packed for long storage
without injury.
1.2
The bidder shall after proper painting, pack and crate all plant equipment for sea shipment/air
freight in a manner suitable for export to a tropical humid and saline air borne climate region
as per Internationally accepted export practice in such a manner so as to protect it from
damage and deterioration in transit by road, rail and/or sea and during storage at site till the
time of erection. The bidder shall be held responsible for all damages due to improper
packing.
1.3
The bidder shall give complete shipping information concerning the weight, size, contents of
each package including any other information the Owner may require. The weight and size of
the package shall be such that they can be easily transported from the maker's works to the
plant site by ship/air, road ways and railways.
1.4
The bidder shall ascertain at an early date and definitely before the commencement of
manufacture, any transport limitations such as weights, dimensions, road culverts, overhead
lines, free access etc. from the manufacturing plant to the project site; and furnish to the
Owner confirmation that the proposed packages can be safely transported, as normal or
oversize packages, upto the plant site. Any modifications required in the infrastructure and
cost thereof in this connection shall be done and borne by the bidder.
1.5
The bidder shall prepare detailed packing list of all packages and containers, bundles and
loose materials forming each and every consignment dispatched to 'site'. The bidder shall
further be responsible, for making all necessary arrangements for loading, unloading and
other handling right from his works; and from Indian port for equipment under the Off-shore
Supply till the 'site' and also till the equipment is erected, tested and commissioned. The
bidder shall be solely responsible for proper storage and safe custody of all equipment.
1.6
All packages must be marked consecutively from number one upwards covering all
shipments until completion of the plant equipment execution without repeating the same
number. Each box, crate, case bundle or each piece of lose material shall be painted with a
combination of one white band and one yellow band of a least 4 cm wide each, round the
body of the box, crates, etc as the case be for easy identification.
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2.0 DEVIATIONS
Deviation from this specification, if any, shall be clearly brought out in the offer. Unless owner
explicitly accepts such deviations, it shall be considered that the offer fully complies with the
specification.
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TECHNICAL SPECIFICATION
FOR
MATERIALS WORKMANSHIP & TEST
Prepared by
Rev: 0
Reviewed by
Date:
Approved by
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1.0 MATERIAL, WORKMANSHIP & TESTS
1.1
General
All materials used in the manufacture of the offered plant equipment shall be of high grade,
free from defects and imperfections, of recent manufacture and unused. Materials not
specifically described elsewhere, shall as far as applicable and practicable conform to the
latest specification of ISS where applicable and equivalent International Standards. Liberal
factors of safety shall be used throughout the design for all parts of plant equipment when
subjected to the most severe operating conditions. The working stress in all parts of the plant
equipment shall be bestowed with ample margins for possible overstressing due to shock.
All work shall be performed and completed in accordance with the best modern shop practice
in manufacture of high grade equipment.
Castings shall be free from blow-holes, flaws, cracks or other defects; and shall be smooth,
close-grained and of true form and dimensions. No plugged or filled-up holes or other defects
will be accepted. No casting shall be burned, plugged, patched or welded; and no repairs or
defects will be accepted.
All materials, supplies, parts and assemblies supplied under this specification shall be tested
as far as reasonably practical.
All welded joints shall be free from defects such as blow-holes, slag inclusions, lack of
penetrations, under-cuts, cracks etc; and shall be made by qualified and tested welders. Slag
shall be ground after joint completion; and well reinforced smooth welds shall be made.
1.2
Inspection, Testing program and Notification
Before manufacture commences, the contractor shall submit an outline of the proposed
inspection and testing programmes (Quality Assurance Programme - QAP) for all major
stages during manufacturing of major equipment. This inspection and testing programme
shall include for the various items, the designation number, the kind of test, test standard and
the extent of witness by the Owner/Engineer or third party.
The notification of the individual witness inspections made by the Owner/Engineer or the third
party, shall be given by the contractor using facsimile or telex or e-mail in a format to be
agreed upon. The contractor shall notify the Owner/Engineer within 21 days prior to the date
on and the place at which item shall be ready for testing. If any postponement becomes
necessary, the contractor shall provide written notification of same at least 72 hours prior to
the originally scheduled date.
If the Owner/Engineer does not attend the test at the place and at the date which the
contractor has stated in his notification, the contractor shall proceed with the test, which shall
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be deemed to have been made in their presence and shall forthwith forward to them duly
certified copies of the test readings.
Before erection commences, the contractor shall submit an outline of the proposed erection
inspection and test programme during the erection of major systems. The individual testing
procedure shall be submitted as progress of erection work of the equipment, systems and/or
units, coordinated with relevant work of the complete plant.
Before commissioning commences, the contractor shall submit an outline of the proposed
commissioning test procedure. The test programmes shall be maintained by the contractor
during erection and commissioning.
1.3
Test : General
During manufacture, the Owner's representative shall have the right to expedite and/or
inspect design, materials, workmanship and progress of manufacture of the contractor's and
his sub-contractor's plant system equipment and may reject any defective materials
considered unsuitable for the intended purpose or which does not comply with the intent of
this specification. The contractor, upon any such rejection by the Owner or his representative,
shall rectify or replace the defective or unsuitable material. The contractor shall provide every
reasonable inspection facility to the Owner's inspector or representative at his own and his
sub-contractor's works.
Material being furnished against this order shall only be shipped when factory inspection
satisfactory to the Owner and/or his representative has been conducted. Such inspection and
acceptance for shipment shall not however, relieve the contractor from entire responsibility
for furnishing the plant system equipment conforming to the requirement of this specification
nor shall prejudice any claim, right or privilege which the Owner may have, because of the
use or supply of defective or unsatisfactory materials for the plant system equipment. Should
the inspection be waived by the Owner, such waiver shall not also relieve the contractor in
any way, from his entire obligations under this order.
The plant system equipment shall at factory or after installation be demonstrated capable of
performing satisfactorily upto the contractor's guaranteed performance. All tests required by
this specification, including retests and inspection, that may be necessary owing to failure to
meet any tests specified, shall be made at the contractor's expense. Additional tests, as
necessary, shall be made to locate any such failure and after determining the causes of
failure and rectifying it, specified tests shall be repeated to establish that the rebuilt plant
system equipment meets with the specification in every respect. Should the equipment
ultimately fail to pass the tests specified, the Owner will have the option to reject the unit.
The bidder shall state in the proposal, the shop testing facilities available. Should full capacity
testing equipment be not available, the bidder shall state the method proposed to be adopted
with detailed computations and justification for adopting such a method to reliably ascertain
the equipment characteristics corresponding to full capacity testing.
1.4
Test Certificate
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In accordance with approved QCP, the results of the tests shall be certified by the
Owner/Engineer or independent agency as applicable. As and when the item of the plant
equipment has passed the tests, the Owner/Engineer shall furnish to the contractor a
certificate in writing to that effect. The Quality Control Plan (QCP) shall be issued by the
contractor within 1 months after NTP. Document files containing material certificates, test
reports, etc shall be compiled for each QCP item of plant equipment; and shall be suitably
identified (including equipment classification reference) and bound. Copies of compiled file
shall be submitted as per distribution schedule
1.5
Tests at Manufacturers Works
The major equipment of the plant to be supplied under this contract shall be subjected to
shop inspection and tests. After NTP, the contractor shall issue within 1 months a QCP
indicating the kind and extent of inspection and tests to be carried out on the offered plant
equipment components to prove whether the equipment fulfills the requirement of the
contract in view of:
•
•
•
Safety Conditions
Consideration of the applied standards and regulations
Execution of workmanship
SITE TESTS
Tests conducted at sites shall be indicated by bidder.
2.0 DEVIATIONS
Deviation from this specification, if any, shall be clearly brought out in the offer. Unless owner
explicitly accepts such deviations, it shall be considered that the offer fully complies with the
specification.
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TECHNICAL SPECIFICATION
FOR
MISCELLANEOUS ACTIVITIES
Prepared by
Rev: 0
Reviewed by
Date:
Approved by
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1.0 SERVICE AFTER SALES
1.1
The bidder shall furnish in detail about his organization for rendering service after sales,
covering deployment of personnel and supply of spares, for ensuring efficient operation and
maintenance of the offered plant equipment. The details of spares and service facilities
possessed by them should be elaborated.
1.2
The bidder shall guarantee furnishing of the following in respect of after sales services
including spares:i)
ii)
Providing services of his specialists on indent from the Owner for periodical or
special maintenance of the plant; as well as for identifying sources of trouble, if
any, reported and measures for immediate rectification.
The bidder shall guarantee maintenance of adequate spares at his works to be
supplied on indent from the Owner at short notice during the life of the plant.
2.0 BID DATA, DRAWINGS AND INFORMATION REQUIRED
2.1
Technical data sheets, drawings, schedules with supporting information incorporating the
details in compliance to spec but not limited to the following shall be furnished along with the
proposal:
2.2
Duly filled in 'Schedule of Guaranteed and other Technical Particulars Schedules ‘C’ except
for data which cannot be finally furnished with the Bid. The Price and Delivery Schedule-B
duly filled in.
2.3
Dimensioned outline drawings of the offered overall plant and separately for equipment
including cross-sectional drawings showing dimensions, net weights, shipping weights and
suggested arrangement layout of proposed plant & equipment with auxiliaries etc. Technical
Literature/leaflets of the above plant equipment.
2.4
Manufacturers' catalogues showing the construction details of various equipments should be
furnished indicating clearly the technical preference of the offered equipment over the
specified equipment.
2.5
List of users of comparable plant equipment with the year in which the Diesel plant and other
critical plant equipment was put actually into service. For technical acceptability of the bid,
proven experience of the bidder in manufacture and satisfactory and trouble free
performance of the critical plant equipment for at least three (3) years is essential for which
the bidder shall furnish necessary documents in support of the above.
2.6
A bar chart of design, engineering, procurement, manufacture, testing, delivery, installation,
commissioning and site testing including civil structural and architectural works of the
proposed plant equipment.
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2.7
Technical description of the proposed plant equipment and materials particularly outlining any
additional list out features proposed for safety & reliability. List out items of work & services
not included and which has to be provided by the Owner for satisfactory commissioning of the
offered plant equipment supplied.
2.8
The bid shall not be considered if the bidder fails to submit all the details asked for. Proposal
should be complete without ambiguity and should be clearly written against each item.
2.9
Bidder shall furnish Quality Assurance Programme for design, manufacture, assembly,
erection, testing & commissioning including civil, structural and architectural works along with
the proposal for all equipment covered under this specification whether manufactured by the
bidder or procured from other sources.
2.10 Technical deviations from the specification, if any, shall be clearly listed in the Schedule-E. In
absence of any deviation given in Schedule-E and accepted by Owner, it will be bidder's
responsibility and his contractual obligation to supply the Plant equipment as per specification
to Owner/Engineer's approval.
2.11 List of shop and site tests, the bidder proposes to carry out including those pertaining to their
sub-suppliers works shall be clearly brought out in Schedule – G. In addition to above tests,
the bidder shall conduct any other tests, to Owner/Engineer's approval, which are considered
important for satisfactory operation of plant equipment.
2.12 Bidder shall furnish all required mandatory and startup commissioning spare parts as well as
maintenance tools and tackles with unit prices for the offered plant equipment.
3.0 POST CONTRACT DATA AND DRAWINGS
3.1
The contractor shall submit within thirty (30) days from the date of the order and Notice to
Proceed (NTP) certified dimensioned drawings and technical schedules giving every detail of
the offered plant equipment particularly the following:
3.2
Completely filled in schedule of guaranteed particulars and other technical particulars.
3.3
Single line diagrams; logic diagrams, dimensioned general arrangement and equipment
layout drawings showing front and side elevations, plan and sectional views of the offered
equipment forming part of the contractor's supply; The drawings should also indicate
structures & supporting details including foundation outline and loading data etc.
Final version of all drawings and data submitted along in the proposal mentioned above.
3.4
3.5
Structural, thermodynamic and pressure part calculations showing compliance with
specifications and codes as and when required.
3.6
Any other drawings/details not specified herein and required by the Owner/Engineer to
correctly coordinate the offered plant equipment with other contractor's work.
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3.7
Civil design calculations.
3.8
Detailed specifications and data sheets of the plant equipment with auxiliaries.
3.9
Detail drawings of critical equipment units, assemblies, parts etc. as deemed necessary.
3.10 Design calculations of conductor sizing, cable sizing, main equipment sizing etc.
3.11 Schematic wiring diagrams along with write-ups for control, interlocks, instrumentation,
protection, circuits. Terminal blocks and terminals arrangement drawings showing power &
control cable connections.
3.12 Owner/Engineer will return to the contractor one (1) print of each drawing either.
(a) stamped approved or (b) marked up with the comments. In case of (a), no further
submission of a drawing will be required. In case of (b), the contractor shall correct his
original drawings to conform to comments made by the Owner/Engineer and resubmit within
two (2) weeks of receipt of comments in the same manner as stated in the Distribution
Schedule. The Owner/Engineer's approval shall not relieve the contractor from any of his
obligation and responsibility to manufacture and supply equipment conforming to this
specification, unless a written amendment to the specification is issued by the Owner.
3.13 After approval of the drawings, reproducible of each drawing shall be supplied. Final
drawings shall be certified as Approved for Construction. Should any minor revision be made
after approval the contractor shall re-distribute prints and reproducible as per the Distribution
Schedule. Every revision shall be marked by a number, date and subject in a revision block
provided in the drawing.
3.14 Reproducible shall be of quality to produce clear and legible prints and any inferior
reproducible will be returned by the Owner for replacement with suitable reproducible. All
reproducible shall be mailed rolled (not folded) on the outside of regular mailing tubes except
for small sizes which can be mailed unfolded in envelope with a cardboard backing. The
prints and reproducible shall be mailed in the most expeditious manner and shall be
accompanied with a letter of transmittal.
4.0 INSTRUCTION MANUAL
4.1
At least one (1) month prior to the dispatch of the plant equipment, fifteen (15) copies of
installation, testing and adjustments after installation, operation and maintenance manuals
shall be furnished. These manuals shall be sturdily bound volumes and shall contain every
drawings and information required for installation, testing, setting and adjustment of all
components after installation, operation and maintenance of the equipment and all its
components. Separate tabs shall be used for such instructions concerning each equipment
control components, electrical and other accessories. The other data needed for servicing the
components and ordering their spare parts.
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4.2
Marked erection prints identifying the components parts of the equipment, as transported,
with its assembly drawings.
4.3
Detailed dimensioned assembly and cross sectional drawings and description of all the plant
system equipment with auxiliaries and drawings identifying all spare parts for re-order.
4.4
Documentation
Correspondence, drawings, progress reports, schedules, tests reports and instruction
manuals shall be mailed in requisite copies in accordance with Distribution Schedule.
5.0 WORK SCHEDULE
5.1
5.2
5.3
5.4
5.5
Time being the essence of the proposal, preference will be given for the offers quoting earlier
deliveries. The bidder shall include in his proposal his programme for furnishing and erecting
the offered plant & equipment.
The programme shall be in the form of master network identifying the key phases in various
areas of total plant work, such as design work, procurement of raw materials, manufacture of
components & subassemblies; complete erection of equipment and all other field activities.
The master network shall conform to completion of trial operation from the date of Letter of
Award within a period of 4 months. The trial operations shall commence any day within 15
days prior to the date of completion indicated above.
This master network shall be discussed and agreed before the issue of letter of award.
Engineering drawings as well as technical data sheets submission schedule shall also be
discussed and finalized before the issue of letter of award. Provisions of the liquidated
damages leviable for delays in completion of trial operation shall become effective after the
above mentioned date.
After the contract award, the contractor shall plan the sequence of work of manufacture and
erection including associated civil works to meet the Owner's power plant commissioning
requirements; and shall ensure that all work/manufacture, shop testing, inspection &
shipment of the equipment in accordance with the required construction/erection sequence.
Within seven (7) days of acceptance of the letter of award, the contractor shall submit, for
review and approval, two copies (1 reproducible and 1 print) of Detailed Network schedules,
based on the Master Network (mutually agreed by the Owner & contractor) to the
Owner/Engineer showing the logic & duration of the activities in the following areas
i)
Engineering, Procurement, Manufacturing & Supply Detailed engineering activities
in regard to procurement of raw materials including bought out items, manufacture,
dispatch/ shipment & receipt at site.
ii)
Civil, Structural & Architectural Works:
Detailed engineering activities in regard to civil & structural works execution based
on the offered equipment and approved drawings including detailed execution of
execution activities covering the complete scope of work.
iii)
Erection, Testing and Commissioning:
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Detailed erection, testing and commissioning activities, covering the complete
scope of work of the offered plant equipment coordinated with the civil and
structural works executed.
5.6
Detailed Manufacturing Program
Detailed manufacturing PERT/PRIMAVERA programme for all the manufacturing activities of
the offered plant equipment at contractor's/subcontractor's works shall be furnished within 7
days of letter of award.
The manufacturing network shall be supported by detailed procurement programme for
critical bought out items/raw materials
Pre-erection Activity Programme
A) Manpower Deployment
B) Tools and plant mobilization plan
C) Detailed Site Mobilization Plan
5.7
Within a week of approval of the Network schedule, the contractor shall forward to the
owner/Engineer copies of the Computer initial run data in an acceptable manner
5.8
The network shall be updated every month; or as frequency as possible to mutual agreement.
Within seven (7) days following the monthly review, a progress meeting shall be held at the
work (possible) wherein the major items of the plant or equipment are being produced. The
meeting will be attended by the Owner/Engineer and responsible representatives of the
contractor. The contractor shall be responsible for minuting the proceedings of the meeting, a
report of which shall reach the Owner or the Owner/Engineer not later than 7 days following
the meeting.
5.9
Access to the contractor's and/or sub-contractor's work shall be granted to the
Owner/Engineer at all reasonable times for the purpose of ascertaining the progress
6.0 PROGRESS REPORTS
During execution of the contract either in manufacture or erection/commissioning, the
contractor shall furnish monthly progress report to the Owner or the Owner/Engineer in a
format as specified indicating the progress achieved during the month, and total progress
upto the month as against scheduled and anticipated completion dates in respect of key
phase of work or manufacture and shipment such as release of drawings for fabrication,
procurement of raw materials, inspection and testing. If called for by the Owner/Engineer, the
contractor shall also furnish to the Owner or the Owner/Engineer resources data in a
specified format and time schedule. The contractor shall also furnish any other information
necessary to ascertain progress if called for by the Owner/Engineer
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7.0 DEVIATIONS
Deviation from this specification, if any, shall be clearly brought out in the offer. Unless owner
explicitly accepts such deviations, it shall be considered that the offer fully complies with the
specification.
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TECHNICAL SPECIFICATION
APPROVED MAKES & VENDERS
Prepared by
Meenakshi
Reviewed by
Kiran Kumar Alla
Approved by
Kiran Kumar Alla
Rev: 1
Date: 21.11.2013
Page 31.1 of 31.5
344
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for Approved Makes & Vendors
1.0
S NO.
APPROVED MAKES & VENDORS
Vendors
1.0
1.1
1.2
1.3
1.4
1.5
Power Transformer
BHARAT BIJLEE LIMITED
ABB LIMITED
SCHNEIDER ELECTRIC LIMITED.
BHEL
VOLTAMP TRANSFORMER LIMITED
2.0
2.1
2.2
2.3
2.4
2.5
2.6
Station Transformers
VOLTAMP TRANSFORMER LIMITED
SHILCHAR TECHNOLOGIES LIMITED
ABB LIMITED
SCHNEIDER ELECTRIC LIMITED.
CROMPTON GREAVES LIMITED
EMCO LIMITED
3.0
3.1
3.2
3.3
3.4
3.5
LT Control, Communication and special cables
POLYCAB
PARAMOUNT COMMUNICATIONS LIMITED
TARUNA METALS PVT. LIMITED.
ALPHA COMMUNICATION
KEI INDUSTRIES LIMITED.
4.0
4.1
4.2
4.3
4.4
4.5
4.6
4.8
4.9
LT(1.1 KV grade) XLPE Insulated Power Cables
PARAMOUNT COMMUNICATIONS LIMITED
KEI INDUSTRIES LIMITED.
HINDUSTAN URBAN PRODUCTS LIMITED
GEMSCAB INDUSTRIES LIMITED
KRISHNA ELECTRICAL INDUSTRIES LIMITED
POLYCAB WIRES PRIVATE LIMITED
KEC INTERNATIONAL LIMITED (RPG CABLES LIMITED )
HAVELLS
5.0
5.1
5.2
5.3
5.4
11KV 500MVA Indoor Switchboard
SIEMENS LIMITED
ABB LIMITED
SCHNEIDER ELECTRIC LIMITED.
CGL
6.0
6.1
6.2
6.3
66KV Outdoor Circuit Breakers
ABB LIMITED
SIEMENS LIMITED
ALSTOM INDIA LIMITED
345
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for Approved Makes & Vendors
7.0
7.1
7.2
7.3
7.4
7.5
7.6
66KV & 11KV Outdoor CT/PT
CROMPTON GREAVES LIMITED
KAPCO ELECTRIC PVT. LIMITED.
ALSTOM
MEHRU ELECTRICAL & MECHANICAL ENGINEERS P LIMITED.
ABB LIMITED
BHEL
8.0
8.1
8.2
8.3
8.4
CVT
CROMPTON GREAVES LIMITED
ABB LIMITED
ALSTOM INDIA LIMITED
MEHRU ELECTRICALS
8.0
8.1
8.2
8.3
8.4
8.5
66KV Lightening Arrestor
ALSTOM
OBLUM ELECTRICAL INDUSTRIES PVT. LIMITED.
LAMCO INDUSTRIES PVT. LIMITED.
ABB LIMITED
CROMPTON GREAVES LIMITED.
9.0
9.1
9.2
9.3
66KV Isolators
ABB LIMITED.
SIEMENS LIMITED.
CROMPTON GREAVES LIMITED.
10.0
10.1
10.2
10.3
66KV Control & Relay Panel
ABB LIMITED.
SCHNEIDER ECLECTRIC LIMITED.
SIEMENS LIMITED.
11.0
11.1
11.2
11.3
11.4
11.5
11.6
11KV Capacitor Bank
UNIVERSAL CABLES LIMITED.
SHREEM ELECTRIC LIMITED
ABB LIMITED
LARSEN & TOUBRO LIMITED
EPCOS INDIA PVT. LIMITED
POWERCAP CAPACITORS PVT LTD
12.0
12.1
12.2
12.3
12.4
12.5
ACDB
NEPTUNE
KAY BEE ELECTRICALS
MK ENGINEER
SHRIRAM SWITCHGEAR LIMITED
POPULAR SWITCHGEAR
346
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for Approved Makes & Vendors
13.0
13.1
13.2
13.3
St. through jointing and Termination Kits - 1.1KV,11KV
RAYCHEM RPG LIMITED
3M ELECTRO & COMM. INDIA (P) LIMITED.
DENSON
14.0
14.1
14.2
St. through jointing and Termination Kits - 66KV
RAYCHEM RPG LIMITED
3M ELECTRO & COMM. INDIA (P) LIMITED.
15.0
15.1
15.2
15.3
15.4
15.5
HPSV/Fluorescent Lamps, Ballasts, Starters / Igniters, Fittings, Lamp Holder,High Mast
PHILIPS ELECTRONICS INDIA LIMITED
CROMPTON GREAVES LIMITED
BAJAJ ELECTRICALS LIMITED
SURYA ROSHNI LIMITED
HPL ELECTRIC LTD
16.0
16.1
16.2
16.3
Transformer oil
APAR INDUSTRIES LIMITED
SAVITA OIL TECHNOLOGIES LIMITED
RAJ PETRO SPECIALITIES PVT. LIMITED.
17.0
17.1
17.2
17.4
17.5
17.6
Protective Relays
SIEMENS LIMITED
EASUN REY ROLLE LIMITED
A-EBERLE
ABB LIMITED
SCHNEIDER ELECTRIC
18.0
18.1
18.2
18.3
18.4
18.5
Overhead Line accessories e.g. Clamps, Connectors, Line Hardware fitting
19.0
19.1
19.2
19.3
19.4
19.5
Disc and Pin Insulators
ADITYA BIRLA INSULATORS
MORDEN INSULATORS LIMITED.
BHEL
W.S. INDUSTRIES
IEC INSULATORS
20.0
STEEL TUBULAR POLES
RAYCHEM RPG PVT.LIMITED
EXALT ENGINEERING INDUSTRIES
RASHTRA UDHYOG LIMITED.
KLEMMEN ENGINEERING
LEGION ENERGY
347
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – I Technical Specification for Approved Makes & Vendors
20.1
20.2
20.3
20.4
FABRICO (INDIA) PVT. LIMITED.
ADVANCE STEEL TUBES LIMITED.
GOOD LUCK STEEL TUBES LIMITED.
RAMA STEEL TUBES LIMITED.
21.0
21.1
21.3
21.5
ACSR Conductors
HINDUSTAN VIDYUT PRODUCTS LIMITED
LUMINO INDUSTRIES LIMITED
POLYCAB WIRES PRIVATE LIMITED
22.0
22.1
22.2
22.3
NI-Cd Battery Bank
HBL POWER SYSTEMS LIMITED
AMCO SAFT INDIA LIMITED
AMARAJA
23.0
23.1
23.2
23.3
Battery Charger cum DC DB
MASS-TECH CONTROLS PRIVATE LIMITED
CALDYNE AUTOMATICS LIMITED.
CHABI ELECTRICALS
24.0
24.1
24.2
24.3
24.4
PAINTS & CHEMICALS
BERGER PAINTS INDIA LIMITED BRITISH PAINTS DIVISION
SHALIMAR PAINTS LIMITED.
NEROLAC PAINTS LIMITED.
ASIAN PAINTS LIMITED.
25.0
25.1
25.2
CEMENT
ACC
ULTRA TECH
26.0
26.1
26.2
STEEL
TATA
SAIL
348
BSES Bhawan, Nehru Place, New Delhi- 19
VOLUME – II
SCHEDULE AND ANNEXURE
349
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule A
SCHEDULE – A
GENERAL PARTICULARS
(This shall from part of Technical Bid)
1.0
Bidder
1.1
1.2
1.3
1.4
1.5
1.6
Name
Postal Address
Telegraphic Address
Telex number / Answer back code
Phone(s)
Name and Designation of the person who
should be contacted in case of clarifications /
details etc. not received expeditiously form
the officer mentioned in item 1.6 above
:
:
:
:
:
:
1.7
Brief write-up giving details of the
organization, years of establishment and
and commercial production activities,
manufacturing, fabrication, shop testing,
erection, testing, commissioning and
after-sales service facilities, key personnel with
their qualifications and experience,
collaboration agreements, if any number of
employees in various categories and last three
(3) years turn over
:
2.0
Bid Validity
:
3.0
All the Schedules filled-in
:
Yes
4.0
All the Deviations brought out in
Schedule – E1and E2
All the drawings, write-ups, literature,
leaflets, calculations, details, etc as
called for in the specification attached
:
Yes
:
Yes
Is the Bidder agreeable to undertake this
contract, if deviations stipulated by him
are not acceptable to the Purchaser
:
Yes/No
5.0
6.0
350
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Seal of Company
Schedule A
Bidders Name
: ____________________
Signature
: ____________________
Name
: ____________________
Designation
: ____________________
Date
: ____________________
351
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule B
SCHEDULE – B
TRANSFORMER OIL
S.No
1
1.1
1.2
1.3
2
Item Description
Manufacturer Name
Address
Contact person
Contact no.
Appearance of oil
3
4
Density at 29.50C Max.
Kinematics viscosity Max.
5
6
Interfacial tension at 270C
Flash point Pensky-Marten
(Closed), Min.
Pour Point, Max
Neutralization value
Total acidity, Max
Inorganic acidity/
Alkalinity
Corrosive sulfur
Electric strength
breakdown voltage
New unfiltered oil. Min.
After filtration Min.
Dielectric dissipation factor
(tan δ).
Specific resistance
At 900C, Min
At 270C, Min
Oxidation stability
Neutralization value after
oxidation, Max.
Total sludge, after
oxidation, Max.
Max Tan delta
Ageing characteristics
after
accelerated ageing
Specific resistance
At 270C Min.
At 900C Min
Dielectric dissipation
factor (tan δ)
Total acidity, Max
Total sludge, Max
Presence of oxidation
7
8
8.1
8.2
9
10
10.1
10.2
11
12
12.1
12.2
13
13.1
13.2
13.3
14
14.1
14.1(a)
14.1(b)
14.2
14.3
14.4
15
Specification requirement
Name
Address
Contact person
Contact telephone no
Clear, transparent and free
from suspended matter or
sediments
0.89 g/cm3
16 cSt at 270C
11 cSt at 400C
0.04 N/m min
1400C
- 150C
0.03 mg KOH/g
Nil
Non-corrosive
Average value of six
samples
30 kV (rms) min.
60 kV (rms)
0.002 at 900C, Max
0.0005 at 270C, Max
(resistivity)
150 X 1012 ohm-cm
3000 X 1012 ohm-cm
0.15 mg KOH/g
0.03 % by weight
0.1 at 700C
(open breaker method with
copper catalyst)
27 X 1012 ohm-cm
2 X 1012 ohm-cm
0.10 at 900C Max
0.05 mg KOH/g
0.05 % by weight
no antioxidant additives
352
Data by Vendor
Yes / No
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
16
17
18
19
inhibitor
Water content, Max
List of clients
PCA content
PCB content
Seal of Company
Schedule B
40 ppm
To be enclosed
3% max
Not detectable
Bidders Name
: ____________________
Signature
: ____________________
Name
: ____________________
Designation
: ____________________
Date
: ____________________
353
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C1
SCHEDULE – C1
11KV INDOOR SWITCHGEAR
Sr. No.
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
A
B
2
2.1
2.2
2.3
2.4
A
B
C
2.5
A
B
2.6
2.7
A
Description
Bus
coupler
Incomer
Switchgear assembly
Make
Type
Reference standard
Voltage (normal / Max.
KV)
Frequency (HZ)
Short circuit rating
Short time current and
duration
Impulse withstand (KV
peak)
1min. Power freq.
withstand test(KV rms)
Construction
Metal clad construction
(Yes / No)
Degree of Portion
Minimum thickness of
sheet metal used (mm)
Draw out feature provided
for
Breaker with service, test
& isolated position - Yes
/No
Voltage Transformer- Yes
/ No
Protection relays -Yes /No
Breaker cubicle
Cubical door can be
closed with breaker in test
and isolated position -Yes
/ No
Working zone units from
floor level (mm)
All meters, switchgear &
relays flush mounted type
-Yes /No
Minimum clear space
required
Front for breaker
withdrawal (mm)
354
Outgoing
Capacitor
Transformer
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
B
2.8
A
B
3
3.1
3.2
3.3
3.4
3.5
A
B
3.6
3.7
3.8
3.9
3.10
A
B
3.11
A
B
C
3.12
3.13
A
B
C
D
E
F
G
Schedule C1
Rear (mm)
Typical vertical section
Overall dimensions
i. Length (mm)
ii. Breath (mm)
iii. Height (mm)
Weight (Kg)
Bus Bar
Make
Material & grade
Reference standard
Cross section area (mm2)
Bus connection (joints)
Silver plated -Yes /No
Conventional made with
anti oxide grease -Yes /No
Rated continuous current
amps
Maximum temp. rise at
rated continuous current
DFG C
Short time current and
duration KA … secs
DC resistance at 85 DEG
C (Ω/m/Ø)
Minimum clearance of bus
bar and connection
Phase to phase (mm)
Phase to earth (mm)
Bus bar provided with
Insulation sleeve
Phase barriers
Cast resin shrouds for
joint
Bus bar supported
spacing (mm)
Bus bar insulators
Make
Type
Reference standard
Voltage class (KV)
Min. creepage distance
(mm)
Cantilever strength
Kg/mm2
Net weight (Kg)
355
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
4
4.1
4.2
4.3
4.4
4.5
4.6
A
4.7
4.8
4.9
4.10
4.11
A
A
4.12
A
B
C
D
E
4.13
4.14
4.15
A
B
C
4.16
A
B
Schedule C1
Circuit Breaker
Make
Type
Reference standard
Related Voltage
Related frequency
Related current and its
reference ambient temp
Continuous current to limit
the max. temp. rise to
55DEG C for silver plated
connections and 40DEG C
for conventional
connections
Related operating duty
Symmetrical breaking
capacity at rated voltage &
operating duty KA rms.
Rated making current
(Kap)
Short time current and
duration KA … secs
Insulation level
Impulse voltage withstand
on 1/50 full wave
1min. Power freq.
withstand test(KV rms)
Maximum overvoltage
factor while switching off
Un loaded transformer
Loaded transformer
Un loaded CABLES
Capacitor
Motors
Opening time max. No
load condition (ms)
Number of permissible
breaker operation under
vacuum loss
At 100% breaking capacity
Opening time Max. (ms)
Arcing time max (ms)
Total break time (ms)
Make time (Max) (ms)
Total closing time (ms)
356
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
4.17
4.18
A
B
4.19
4.20
4.21
A
B
4.22
4.23
A
B
C
4.24
A
B
C
D
4.25
A
B
C
4.26
A
B
C
D
4.27
Schedule C1
Total length of contact
travel (mm)
No. of breaker operation
permission without
requiring inspection,
replacement of contacts
and other main parts.
At 100% rated current
At 100% rated breaking
current
Types of contents
Maximum clearance in air
(mm) from live part
Between phases
Between live parts and
ground
Type of arc control device
provided
Operating mechanism
closing
Type
No. of breaker operations
stored
Trip free or fixed trip
Anti pumping features
provided
Operating mechanism
tripping
Type
No. of breaker operations
stored
Trip free or fixed trip
Anti pumping features
provided
Spring charging motor
Rating
Make
Voltage and permissible
variation(%)
Closing coil
Voltage (V)
Permissible voltage
variation (%)
Closing current at rated
voltage (A)
Power at rated voltage (w)
Trapping Coil
357
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
A
B
C
D
4.28
A
B
C
D
E
F
G
H
I
4.29
A
B
4.30
4.31
4.32
A
B
4.33
Schedule C1
Voltage (V)
Permissible voltage
variation (%)
Tripping current rated
voltage (A)
Power at rated voltage (w)
Breaker / Accessories
Accessories such as
control switch indication
lamps etc. furnished as
specified.
(Please attach separate
sheet giving details of all
Accessories, inter locks
and safety shutters)
Mechanical safety
interlock
Automatic safety interlock
Operational interlock
Emergency manual trip
Operation counter
Change / discharge
indicator
Manual spring charging
facility
Auxiliary switch with 6 No
+ 6 NC for owner's use
Contacts wear indicator
Auxiliary Switch
Switch contacts type
Contacts rating at
1) Make & Continuous
(Amps)
2) Break (Inductive)
(Amps)
Net weighting of the
breaker (Kg)
Impact load foundation
design ( to include dead
load plus impact value on
opening at maximum
interrupting rating) (Kg)
On vacuum loss (Amps)
Possible load current
breaker (Amps)
Possible fault current
breaker (Amps)
Overall dimensions
358
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
A
B
C
4.34
5
5.1
A
B
C
5.2
A
B
C
5.3
A
B
C
D
6
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
6.9
A
B
C
D
E
F
6.10
Schedule C1
Length (mm)
Breath (mm)
Height (mm)
Type test report
omidentical breaker
furnished
Control & Indications
Push Button Make
Type & Catalog No.
Contact rating at
110V/220V.D.C
Make & continuous
(Amps)
LED lamps: Make:
Type & Catalog No.
Watts /Voltage
Lamps & lens replaceable
from front with glass cover
Selector switch: Make:
Type & Catalog No.
Contact rating
Make & continuous
(Amps)
Break (Inductive)(Amps)
Current Transformer
Make
Types & Voltage Level
Reference standard
C.T ratio as specified
Short circuit withstand
short time current for 1
sec. - KA rms Dynamic
current -KA peak
Class of insulation
Temperature rise
Basic insulation level
For metering & protection
CT ratio
Class of accuracy
Rated burden VA
Knee point voltage V
Excitation current at VK / 4
Rated saturating current
Amp
For differential & restricted
earth fault protection
359
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
A
B
C
D
E
F
6.11
A
B
C
D
E
F
G
6.12
A
B
C
D
E
F
G
6.13
A
B
C
D
E
F
G
7
7.1
7.2
7.3
Schedule C1
CT ratio
Class of accuracy
Rated burden VA
Knee point voltage V
Excitation current at VK / 4
Rated saturating current
Amp
For restricted earth fault
protection
CT ratio
Class of accuracy
Rated burden VA
Knee point voltage V
Excitation current at VK / 4
Rated saturating current
Amp
Secondary resistance (Ω)
For stand by earth fault
protection
CT ratio
Class of accuracy
Rated burden VA
Knee point voltage V
Excitation current at VK / 4
Rated saturating current
Amp
Over current rating
continuous % over load
(%)
For sensitive by earth fault
protection (CBCT)
CT ratio
Class of accuracy
Rated burden VA
Knee point voltage V
Excitation current at VK / 4
Rated saturating current
Amp
Over current rating
continuous % over load
(%)
Potential Transformer
Make
Types & Voltage Level
Reference standard
360
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
7.4
7.5
A
B
7.6
A
B
7.7
A
B
7.8
7.9
7.10
7.11
A
B
7.12
A
B
C
7.13
A
B
7.14
A
B
7.15
8
8.1
8.2
Schedule C1
Voltage ratio
Accuracy
Corer-1
Corer-2
Rated burden
Corer-1
Corer-2
Over voltage factor
Continuous
30 Seconds
Class of insulation
Temperature rise over
ambient ( 0 C)
Basic impulse level (KV
peak)
Winding connection
Primary
Secondary
Fuses
Continuous rating HV / LV
(Amp)
Symmetrical fault rating
HV /LV KA rms
Make
Maximum ratio error at
90% to 100% of rated
voltage and 25% to 100%
of rated secondary burden
at unity power factor
90% to 106% of rated
voltage and 10% to 50%
of rated secondary burden
at 0.2 p.f.
Maximum Phase
difference at
90% to 106% of rated
voltage and 10% to 50%
of rated secondary burden
at 0.2 p.f.
90% to 106% of rated
voltage and 10% to 50%
of rated secondary burden
at 0.2 p.f.
E=Weight (Kg)
Relay
Manufacture
Model Type
361
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
8.3
8.4
8.5
8.6
8.7
8.8
8.9
8.10
8.11
8.12
A
B
C
D
E
F
8.13
8.14
8.15
8.16
8.16.1
A
B
C
D
E
F
8.16.2
A
B
C
8.16.3
A
B
C
Schedule C1
Draw out type with built in
test facilities. Yes/ No
Built in test facility Yes /No
Type of mounting
Reference standard
All relays furnished as per
drawing and specification
All relevant relay leaflets
and catalogue furnished
Communication port type
Auxiliary Supply
Measurement and data
acquisition feature
Control and supervision
IEC protocol
Open protocol feature
Programming facility
Separate output for
individual element
Event recording facility
number of events
Required software offered
C.T.secondary current
Self diagnostic feature
Modular design
Relay details
Over current
Make
Type
Characteristic available
Range of setting
i. Current
ii. Time
Range of setting
i. Current
ii. Time
Rated burden
Synchronizing check relay
Make
Type
Setting range
Earth fault
Make
Type
Characteristic available
362
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
D
E
8.16.4
A
B
C
D
E
8.16.5
A
B
C
D
E
8.16.6
A
B
C
D
E
8.16.7
A
B
C
D
8.16.8
A
B
C
D
8.16.9
A
Schedule C1
Range of setting
i. Current
ii. Time
Rated burden
Over current (Directional)
Make
Type
Characteristic available
Range of setting
i. Current
ii. Time
Rated burden
Earth fault (Directional) if
applicable
Make
Type
Characteristic available
Range of setting
i. Current
ii. Time
Rated burden
Neutral unbalance relay
Make
Type
Characteristic available
Range of setting
i. Current
ii. Time
Rated burden
Under voltage relay
Make
Type
Range of setting
i. Current
ii. Time
Rated burden
Over voltage relay
Make
Type
Range of setting
i. Current
ii. Time
Rated burden
Busbar differential relay
Make
363
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
B
C
D
E
8.16.10
A
B
C
D
E
F
G
8.16.11
A
B
C
D
E
8.16.12
A
B
C
D
E
9
9.1
A
B
C
D
E
F
9.2
A
Schedule C1
Type
High impedance / low
impedance
Facility of CT radio
adjustment possible
through software. Yes / No
CT supervision facility
available. Yes /No
Transformer differential
relay
Make
Type
High impedance / low
impedance
Facility of CT radio
adjustment possible
through software. Yes / No
Facility of transformer
vector group adjustment
possible through software.
Yes/ No
Setting range
Rated burden
Restricted earth fault relay
Make
Type
Combined with differential
relay. Yes / No
Setting range
Rated burden
Stand by earth fault relay
Make
Type
Characteristics
Setting range
Rated burden
Meters
ammeter
Make
Type
Reference standard
Size
Scale
Accuracy class
Voltmeter
Make
364
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
B
C
D
E
F
9.3
A
B
C
D
E
F
G
H
I
J
K
L
M
N
10
10.1
10.2
10.3
10.4
A
B
11
11.1
11.2
11.3
11.4
12
12.1
12.2
A
B
C
13
13.1
Schedule C1
Type
Reference standard
Size
Scale
Accuracy class
Energy Meter
Make
Type
Reference standard
Size
Scale
Accuracy class
Measurement
kWh
kVARh
kVAH
Any Other
Data stored capability
Pulse output facility
Data down loading facility
Secondary Wiring
Type of insulation
Voltage grade
Conductor material
Conductor Size (minimum)
and insulation wiring
Potential circuit
Control & current circuit
Terminal Block
Make
Type
Catalog No.
20% spare terminal
furnished
Cable Termination
Clearance for power cable
termination
Removable gland plate
Material for multicore
cable
Material for single core
cable
Thickness of plate
Name Plate
Material
365
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
13.2
13.3
A
B
14
14.1
A
B
C
D
E
14.2
A
B
14.3
15
15.1
A
B
15.2
A
B
16
16.1
17
17.1
A
B
18
A
B
19
19.1
19.2
19.3
20
Schedule C1
Thickness
Size for
Breaker cubicle
Instrument / devices
Space heater / plug
socket
Cubicle heater
Thermostat controlled
Wattage
Voltage
Resistance (ohms)
Thermostat range
Plug Socket
Type
Rating
Cubical heater & plug
socket circuit provided
with MCB's
A.C. /D.C. Supply
Isolated switches for
incoming supply
A.C. Type & rating
D.C. Type & rating
Isolated switches at each
cubicle
A.C. Supply type & rating
D.C. Supply type & rating
Tropical Protection
Any Special treatment for
tropical protection
Painting
Finish of switchgear
Inside
Outside
No. of Accessories
furnished
Breaker lifting & handling
trolley
Any other
Tests
Reference standard
Routine test to be
performed on switchgear
Type test certificates
submitted
Drawing / Data
366
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
20.1
20.2
20.3
20.4
Schedule C1
General arrangement for
panel board
Foundation Panel
Bill of material
Cross sectional drawing
for every type of
switchgear (Add sheets if
necessary)
Seal of Company
Bidders Name
: ____________________
Signature
: ____________________
Name
: ____________________
Designation
: ____________________
Date
: ____________________
367
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C2
SCHEDULE – C2
66 kV CONTROL & RELAY PANEL
Parameter
1.00.00
1.01.00
1.02.00
1.03.00
1.04.00
1.04.01
1.04.02
1.04.03
1.05.00
1.05.01
1.05.02
1.06.00
1.06.01
1.06.02
1.06.03
1.07.00
1.07.01
1.07.02
1.08.00
1.08.01
1.08.02
1.08.03
1.09.00
1.09.01
1.09.02
1.09.03
1.10.00
1.10.01
1.10.02
1.11.00
1.12.00
1.12.01
1.12.02
1.13.00
1.13.01
1.13.02
Technical Particulars
CONTROL PANEL BOARD
Make
Type
Reference Standard
Construction
Degree of protection
Sheet metal thickness mm
Floor channel sills, vibration damping pads
and kick plate furnished?
Equipment Mounting
All relays, meters and switches are flush
mounted?
Relays furnished in draw out cases with
built in test facilitate?
Name plate
Material
Thickness
Size for:Equipment
Panels
Mimic
Material
Width
Internal Illumination
Volt
Watt
Door switched controlled
Space Heater
Volt
Watt
Thermostat Controlled?
Plug Socket
Type
Rating
Panel Illumination, space heater & plug
socket circuits provided with individual
switch fuse units?
AC/DC Supply - Type & rating of isolating
switch fuse units for
Incoming AC Supply
Incoming DC Supply
Internal Wiring
Wire Type
Voltage Grade
368
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
1.13.03
1.13.04
1.13.05
1.14.00
1.14.01
1.14.02
1.14.03
1.15.00
1.15.01
1.15.02
1.16.00
1.16.01
1.16.02
1.16.03
2.00.00
2.01.00
2.02.00
2.03.00
2.04.00
2.04.01
2.04.02
3.00.00
3.01.00
3.02.00
3.03.00
3.04.00
3.04.01
3.04.02
4.00.00
4.01.00
4.02.00
4.03.00
4.04.00
4.04.01
4.04.02
5.00.00
5.01.00
5.02.00
5.03.00
5.04.00
5.04.01
5.04.02
5.05.00
6.00.00
6.01.00
6.02.00
6.03.00
6.04.00
Schedule C2
Conductor Material
Conductor Size for
i) Current / control circuit
ii) Voltage Circuit
Wires identified at both ends with ferrules?
Terminal block
Make
Type / Catalogue No
20% spare terminals furnished?
Ground Bus
Materials
Size (mm)
Painting
Type of finish
Colour Shade - Inside/Outside
Details of Painting procedure finished?
BREAKER CONTROL SWITCH
Make
Type
Reference Standard
Contact Rating
Make & Continuous (A)
Break (inductive) (A)
ISOLATING CONTROL SWITCH
Make
Type
Reference Standard
Contact Rating
Make & Continuous (A)
Break (inductive) (A)
METER SELECTOR SWITCH
Make
Type
Reference Standard
Contact Rating
Make & Continuous (A)
Break (inductive) (A)
PUSH BUTTON
Make
Type
Reference Standard
Contact Rating
Make & Continuous (A)
Break (inductive) (A)
NO & type of Contacts provided per button
LAMPS
Make
Type
Reference Standard
Rating:
369
220V DC
240V AC
220V DC
240V AC
220V DC
240V AC
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
6.04.01
6.04.02
6.04.03
6.05.00
6.06.00
7.00.00
7.01.00
7.02.00
7.03.00
7.04.00
7.05.00
Schedule C2
8.00.00
8.01.00
8.02.00
8.03.00
8.04.00
8.05.00
8.06.00
8.07.00
9.00.00
9.01.00
9.02.00
9.03.00
9.04.00
9.05.00
9.06.00
9.07.00
9.07.01
9.07.02
10.00.00
10.01.00
10.02.00
10..03.00
10.04.00
10.05.00
10.06.00
10.07.00
11.00.00
11.01.00
11.02.00
11.03.00
11.04.00
11.05.00
11.06.00
11.07.00
11.08.00
Volt
Watt
Series Resistance
10 % Extra lamps furnished?
Size of lens
SEMAPHORE INDICATORS
Make
Type
Diameter of the Disc
Operating voltage
Burden (Watt DC)
Whether latch in type or supply Failure
type
INDICATING INSTRUMENT
Make
Type
Reference Standard
Type of Movement
Accuracy Class
Scale in Degrees
VA Burden
MULTIFUNCTION METER
Make
Type
Reference Standard
Furnished in Draw out Case or not
Type of Register
Accuracy Class
VA Burden
Current Coil
Voltage Coil
ANNUNCIATOR
Make
Type
Reference Standard
No. of Annunciator groups furnished?
No. of Windows per group
Overall Dimension of a group (mm)
Detailed Write-up on Scheme furnished?
TRANCDUCERS
Whether provided as per specification
Make
Type
Output
Accuracy
Response Time
Power Supply
Isolation
11.09.00
Catalogue furnished
7.06.00
370
Ammeter
Voltmeter
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
12.00.00
12.01.00
12.02.00
12.03.00
12.04.00
12.05.00
12.06.00
12.07.00
12.08.00
Schedule C2
RELAYS
Relays furnished in draw out cases with
built in test facilitates?
Line Protection Panel
Transformer Panel
Bus coupler Panel
Miscellaneous Auxiliary Relays
Auxiliary Relay, Voltage Operated with
4 pair of contacts
8 pair of contacts
Auxiliary Relay, Current Operated with
4 pair of contacts
Catalogue of all relays submitted with bid
Seal of Company
Make
Type
Bidders Name
: ____________________
Signature
: ____________________
Name
: ____________________
Designation
: ____________________
Date
: ____________________
371
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C3
SCHEDULE – C3
BATTERY CHARGER
Sr.
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21.1
21.2
22
23
24
25
26
27
Description
Data to be filled by manufacturer
Manufacturer equipment type
Conformance to design standards as per
specification Yes / No
Conformance to design features as per
specification Yes / No
Submitted to deviation sheet for each
specification clause no - Yes / No
Panel dimension in mm ( length x depth x height
)
Panel weight in kg
Panel enclosure protection offered
Voltage regulation as per specification ( value to
be specified)
Boost charging DC current adjustment range
(Value to be specified)
Amount of Ripple in DC in %
- output with battery
- without battery
Charger efficiency offered
Max temperature rise above ambient
Power factor at rated load
Rectifier bridge as per specification
Heat generated by the panel in Kw
AC MCCB - Make , rating
DC MCCB - Make , rating
Rectifier transformer - Make , rating
Semiconductor rectifier - Make , rating
DC conductor - Make , rating
DCDB integral part of charger or separate?
MCB for DC distribution boards - Make, rating
Conformance to metering & indication as per
specification
Conformance to make of component as per
specification
Conformance to mimic diagram, labels & finish
as per specification
Submission of component catalogue - Yes / No
DC charger nominal output current - ( battery
trickle charge + DC load)
DC charger boost charge current
372
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
28
29
30
30.1
30.2
30.3
30.4
30.5
Schedule C3
DC battery
DC battery duty cycle
DC distribution board output DP MCB feeders
required
63 amp DP MCB
40 amp DP MCB
25 amp DP MCB
16 amp DP MCB
10 amp DP MCB
Seal of Company
Bidders Name
: ____________________
Signature
: ____________________
Name
: ____________________
Designation
: ____________________
Date
: ____________________
373
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C4
SCHEDULE – C4
Ni – Cd BATTERY
S.NO.
1
2
3
4
5
6
6.1
7
7.1
7.2
8
8.1
8.2
9
10
11
12
13
13.1
14
15
16
17
17.1
18
19
20
21
22
23
24
Data to be filled
by Manufacturer
Description
Battery ( as per scope of supply annexure A) - Yes / No
Manufacturing battery type
Conformance to design standards as per specification
clause no. 2.0 - Yes / No
Conformance to design feature as per specification
clause no. 3.0 & 4.0 - Yes / No
Submitted of deviation sheet for each specification
clause no - Yes / No
Battery GA drawing submitted - Yes / No
Battery selection / sizing calculation submitted - Yes /
No
Battery rating (C5) offered in Ahr
Rating at temperature 27 deg C as per IS
Rating at temperature 20 deg C as per IEC
Battery race type offered -steel or FRP
Number of steps in a tire
Number of tires in a rack
Battery bank dimensions in mm ( length x depth x
height)
Battery cell weight in kg
Battery cell anode --- no. of plates & thickness in mm
Battery cell cathode --- no. of plates & thickness in mm
Battery cell nominal voltage
Battery cell float charge voltage
Battery cell maximum boost charge voltage
Battery cell end cell voltage
Total battery bank float charging voltage required in
volts
Total battery bank boost charging voltage required volts
Total time required for boost charging from and cell
voltage to rated voltage /capacity.
Battery internal resistance ( in Ohms ) at fully charged
condition
Heat generated by battery at rated full load (in Kw)
Electrolyte chemical name
Electrolyte specific gravity at 27 deg C
Recommended topping up frequency (in weeks or
months)
Amount of gas evolution in one full charge discharge
cycle (in liter / Ahr)
Type of separators used in battery cell
374
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
25
26
27
Schedule C4
Shelf life period ( to retain 90% of energy from full
charge condition at 27 deg C)
Total battery bank short circuit fault level ( in KA)
Battery bank terminal bus bar with insulating shrouds Yes /No
Seal of Company
Bidders Name
: ____________________
Signature
: ____________________
Name
: ____________________
Designation
: ____________________
Date
: ____________________
375
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C5
SCHEDULE – C5
STATION AUXILIARY TRANSFORMER
Sr.
Particulars
1.0
General
1.1
Make
1.2
Type
Specified / Required
Oil immersed, core type, step down
located generally outdoor but may
be located indoor also with poor
ventilation. Bidder shall confirm full
rating available in indoor location
also
2.0
Nominal Continuous Rating, KVA
2.1
HV winding
400kVA
2.2
LV winding
400kVA
3.0
Rated voltage ( kV )
3.1
HV Winding
11 kv
3.2
LV Winding
433 volt
4.0
Rated current ( Amps )
4.1
HV Winding
4.2
LV Winding
5.0
Connections
5.1
HV Winding
Delta
5.2
LV Winding
Star with neutral
5.3
Vector Group reference
6.0
Impedance at principal tap rated
Dyn11
current and frequency, ohm @75 deg
C
6.1
Impedance
5.0 % with IS tolerance
376
Offered
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
6.2
Reactance
6.3
Resistance
6.4
Impedance at lowest tap at rated
Schedule C5
current and frequency
6.5
Impedance at highest tap at rated
current and frequency
7.0
Resistance of the winding at 750 C in
ohm
7.1
a) HV
7.2
b) LV
8.0
Zero sequence impedance in ohm
8.1
a) HV
8.2
b) LV
9.0
Guaranteed maximum losses at
principal tap full load and 75°C
without any positive tolerance,
kW
9.1
No load losses (max.)
0.7
9.2
Load losses (max.)
5.1
9.4
Total I2R losses of windings @ 75
deg C, KW
9.5
Total stray loses @ 75 deg C, KW
9.6
Total losses (max.), KW
9.7
No load loss at maximum permissible
5.8
voltage and frequency (approx.),kW
10.0
Temperature rise over reference
ambient of 50 0C
10.1
Top oil by thermometer 0 C
10.2
Winding by resistance
0
C
40 0C
45 0C
377
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C5
11.0
Efficiency
11.1
Efficiency at 750C and unity power
factor
%
11.1.1
at 110% load
11.1.2
at 100% load
11.1.3
at 80% load
11.1.4
at 60% load
11.1.5
at 40% load
11.1.6
at 20% load
11.2
Efficiency at 750C and 0.8 power
factor lag
%
11.2.1
at 110% load
11.2.2
at 100% load
11.2.3
at 80% load
11.2.4
at 60% load
11.2.5
at 40% load
11.2.6
at 20% load
11.3
Maximum efficiency at 750C
11.4
Load and power factor at which it
%
occurs
12.0
Regulation , (%)
12.1
Regulation at full load at 750 C
12.1.1
at unity power factor
12.1.2
at 0.8 power factor lagging
12.2
Regulation at 110% load at 750 C
12.2.1
at unity power factor
12.2.2
at 0.8 power factor lagging
13.0
Tappings
378
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C5
13.1
Type
Off Circuit taps on HV winding
13.2
Capacity
Full capacity
13.3
Range-steps x % variation
+5% to -5% @ 2.5%
13.4
Taps provided on HV winding (Yes /
Yes.
No)
13.5
Rated current of rotary switch
60 A
14.0
Cooling system
-
14.1
Type of cooling
ONAN
14.2
No. of cooling unit Groups
14.3
Capacity of cooling units
14.4
Mounting of radiators
14.5
Number of Radiators
14.8
Total radiating surface , sqmm
14.9
Thickness of radiator tubes, mm
15.0
Details of Tank
15.1
Material
Minimum 1.2 mm
Robust mild steel plate without
pitting and low carbon content
15.2
Thickness of sides
mm
15.3
Thickness of bottom
mm
15.4
Thickness of cover
mm
15.5
Confirmation of Tank designed and
tested for Vacuum, Pressure ( Ref:
CBIP Manual ) , (Yes/ No)
15.5.1
Vacuum
mm of Hg. / (kN/m2)
As per CBIP
15.5.2
Pressure
mm of Hg.
Twice the normal head of oil /
normal pressure + 35kN/m2
whichever is lower, As per CBIP
15.6
Is the tank lid sloped?
Yes
15.7
Inspection cover provided (Yes / No)
as per clause 4.2.1.5
15.8
Location of inspection cover (Yes /
No)
15.9
Min. dimensions of inspection cover (
379
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C5
provide list of all inspection cover with
dimension), mm x mm
16.0
Core
16.1
Type:
Core
16.2
Core material grade
Premium grade minimum M4
16.3
Core lamination thickness in mm
0.27 Max
16.4
Insulation of lamination
With insulation coating on both
sides
16.5
Design flux density at rated condition
at principal tap, Tesla
16.6
Maximum flux density at 10 %
1.9 Tesla
overexcitation /overfluxing, Tesla
16.7
Equivalent cross section area mm²
16.8
Guaranteed No Load current at 100%
rated voltage , Amps
16.8.1
HV
16.8.2
LV
16.9
Guaranteed No Load current At 110%
rated voltage, Amps
16.9.1
HV
16.9.2
LV
17.0
Type of Winding
17.1
HV
17.2
LV
17.3
Conductor material
Electrolytic Copper
17.4
Current density (HV/LV)
Maximum allowed 3.0 A per sqmm.
At any tap
17.5
Gauge/area of cross section of
conductor
17.5.1
a) HV
17.5.1
b) LV
380
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C5
17.6
Insulating material
17.6.1
HV Turn
17.6.2
LV Turn
17.6.3
LV Core
-
17.6.4
HV - LV
-
17.7
Insulating material thickness, mm
17.7.1
HV Turn
17.7.2
LV Turn
17.7.3
LV to Core
17.7.4
HV to LV
-
18.0
Minimum design clearance, mm
18.1
HV to earth in Air
18.2
HV to earth in oil
18.3
LV to earth in Air
18.4
LV to earth in oil
18.5
Between HV & LV in Air
18.6
Between HV & LV in oil
18.7
Top winding and yoke
18.8
Bottom winding and yoke
19.0
Insulating oil
19.1
Quantity of oil
19.1.1
In the Transformer tank
19.1.2
In each radiator
19.1.4
Total quantity
19.2
10% excess oil furnished?
Yes
19.3
Type of Oil
As per BSES Spec Annex -C
20.0
Bushing / Support Insulator
20.1
Make
20.2
Type
Ltrs
-
381
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C5
20.2.1
HV side
As per Cl. 3.2.7.1 of the spec
20.2.2
LV side
As per Cl. 3.2.7.2 of the spec
20.3
Reference Standard
20.4
Voltage class, kV
20.4.1
HV side Bushing/ Support Insulator
12 kV
20.4.2
LV side line and neutral bushing/
1.1 kV
Support Insulator
20.5
Creepage factor for all bushing /
31 mm / kV
Support Insulator mm/KV
20.6
Rated thermal short time current
20.6.1
HV bushing
25 times rated current for 2 secs.
20.6.2
LV line and neutral bushing
25 times rated current for 2 secs.
20.7
Weight, Kg
20.7.1
HV bushing
20.7.2
LV line and neutral bushing
20.8
Free space required for bushing
removal, mm
20.8.1
HV bushing
20.8.2
LV line and neutral bushing
21.0
Terminal connections
21.1
HV
Cable size as per annexure A 22.0
21.2
LV
Cable size as per annexure A 23.0
21.3
LV Neutral
Cable size as per annexure A 23.0
22.0
H.V. Cable box
Required
22.1
Suitable for cable type , size
As per annexure A cl. 22.0
22.2
Termination height, mm
750 mm, minimum
22.3
Gland Plate dimension, mm x mm
22.4
Gland Plate material
Aluminium
22.5
Gland Plate Thickness, mm
5 mm minimum
22.5
Phase to phase clearance inside box,
180 mm
mm
22.6
Phase to earth inside box, mm
120 mm
382
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C5
22.7
HV Cable Box Protection Class
IP 55
23.0
L.V Cable termination arrangement
With cable box
23.1
Suitable for cable type , size
Cable size as per annexure A cl.
23.0
23.2
Termination height, mm
1000 mm, minimum
23.3
Gland Plate dimension, mm x mm
23.4
Gland Plate material
Aluminium
23.5
Gland Plate Thickness, mm
5 mm minimum
23.5
Phase to clearance inside box, mm
25 mm minimum
23.6
Phase to earth inside box, mm
25 mm minimum
23.7
LV Cable Box Protection Class
IP 55
24.0
L.V neutral Cable termination
Separate cable box not required
arrangement
25.0
Current Transformer on LV phases
25.1
Type
25.2
Make
25.3
Reference Standard
25.4
CT Ratio
As per annexure C cl 21.0
25.5
Burden, VA
As per Cl. 3.2.9.5 of the spec.
25.6
Class of Accuracy
As per Cl. 3.2.9.4 of the spec.
25.7
CT terminal box size
As per Cl. 3.2.9.8.1 of the spec.
26.0
Pressure release device
26.1
Minimum pressure the device is set to
rupture
26.1.1
For Main Tank
27.0
Fittings Accessories Each
Transformer furnished as per Clause
No 5. (Bidder shall attach separate
sheet giving details, make and bill of
materials)
383
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
28.0
Schedule C5
Painting: as per clause for the
transformer, cable boxes, radiator,
Marshalling box (Yes/No)
29.0
Over all transformer dimensions
29.1
Length, mm
1700
29.2
Breadth, mm
1500
29.3
Height, mm
1700
30.0
Transformer Tank Dimensions
30.1
Length, mm
30.2
Breadth, mm
30.3
Height, mm
31.0
Weight data
31.1
Core, kG
31.2
Frame parts, kG
31.3
Core and frame, kG
31.4
Total Winding, kG
31.5
Core , Frame, Winding, kG
31.6
Tank, kG
31.7
Tank lid, kG
31.8
Empty conservator tank, kG
31.9
Each radiator empty, kG
31.10
Total weight of all radiators empty, kG
31.11
Weight of oil in Tank, kG
31.12
Weight of oil in Conservator, kG
41.13
Weight of oil in each Radiators, kG
31.14
Total weight of oil in Radiators, kG
31.16
Total Transport weight of the
transformer, kG
32.0
Volume Data
384
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
32.1
Volume of oil in main tank, litres
32.2
Volume of oil between highest and
Schedule C5
lowest levels of main conservator,
litres
32.4
Volume of oil in each radiator, litres
32.5
Total volume of oil in radiators, litres
32.7
Transformer total oil volume, litres
33.0
Shipping Data
33.1
Weight of heaviest package, kG
33.2
Dimensions of the largest package (L
x B x H) mm
34.3
Tests
34.1
All in process tests confirmed as per
Cl. (Yes/ No)
34.2
All Type Tests confirmed as per Cl.
(Yes / No)
34.3
All Routine Tests confirmed as per Cl.
(Yes/ No)
34.4
All Special Tests confirmed as per Cl.
(Yes/ No)
Seal of Company
Bidders Name
: ____________________
Signature
: ____________________
Name
: ____________________
Designation
: ____________________
Date
: ____________________
385
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C6
SCHEDULE – C6
11kV CAPACITOR BANK
Sr. No.
2.0
3.0
Description
Data to be filled by Manufacturer
Manufacturer equipment type/make
Conformance to design standards as per
specification clause no. 2.0- Yes/No
- Capacitor Unit
- Series Reactor
- LA
- Isolator
4.0
Conformance to capacitor design
requirements as per specification clause no.
4.0 to 7.0 - Yes/No
5.0
Submission of deviation sheet for each
specification clause no. -Yes/No
6.0
Capacitor single phase unit
6.1
Enclosure sheet metal thickness in mm
6.2
Hermetic sealing method (pressure
welding/gas welding/sealant/ if any other pl.
specify)
6.3
No. of series group/unit
6.4
No. of parallel elements/ series group
6.5
No. of APP layers -double/triple
6.6
Thickness of APP film
6.7
Thickness of Al foil
6.8
Maximum voltage stress per APP layer
6.9
Rated capacitance in micro farad
6.10
Output at rated system voltage (in kVAR)
6.11
Rated current in Amp.
7.0
Overall capacitor bank rating
7.1
At rated system voltage(in kVAR)
(requirement is 5.4 MVAR at 11kV with sub
bank rating of 3.6 & 408 MVAR
7.2
Rated current in Ampere
7.3
Connection in double star?- Yes/No
Space provided for future capacity addition as
per Annexure B clause 9.0? -Yes/No
Accessories provided for future capacity
addition as per Annexure B cl:9.0? -Yes/No
Spare capacitor unit offered? Yes/No
7.4
7.5
7.6
386
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
7.7
8.0
8.1
8.2
9.1
9.2
10.1
10.2
Schedule C6
Series Reactor rating details
(bank rating ≥22kV)
Capacitor bank insulation level
Impulse withstand voltage (kV peak)
One minute power frequency withstand
voltage (kV rms)
Bus bar cross-section in sq. mm
Bus bar short time withstand capacity in kA
for 3sec
Bus bar support insulator make & type
12
Bus bar support insulator voltage class
Capacitor unit maximum temperature rise
above ambient in Deg. Celsius
Capacitor unit power loss in kilowatt
13
Capacitor bank total power loss in kilowatt
11
14.1
15.0
Discharge device type & material
Minimum time gap required between
capacitor switching OFF & ON operation (in
sec.)
Dimension in mm
15.1
Capacitor unit -width x breadth x height
15.2
Capacitor bank -width x breadth x height
15.3
Enclosure -width x breadth x height
16.0
Weight in kg
16.1
Capacitor single phase unit
16.2
Steel enclosure & rack/structure
16.3
Total assembly
Neutral Current Transformer as per clause no.
4.20 -Yes/No
Conformance to label & finish as per
specification clause no. 7 -Yes/No
Copy of type test certificate submitted? Yes/No
Submission of GA drawing/documentation as
per Annexure A clause 2.0 -yes/No
14.2
17.0
18.0
19.0
20.0
Seal of Company
Bidders Name
: ____________________
Signature
: ____________________
Name
: ____________________
Designation
: ____________________
Date
: ____________________
387
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C7
SCHEDULE – C7
LT POWER CABLES
For each size / rating separate GTP need to be furnished.
S.No.
Description
Buyer's requirement
1
Make
………………
2
Type (AS PER IS)
A2XFY (Multicore)
3
Voltage Grade (KV)
1.1
4
Maximum conductor temperature
A
Continuous ( 0 C)
90 0C
B
Short time ( 0 C)
250 0C
5
Conductor
4CX300,4CX50, 4CX25,
A
Size (mm2)
4CX10 & 2CX10 Sqmm
As per Manufacturer
B
No. of wire in each conductors Nos.
standard
Dia of wires in each conductors
As per Manufacturer
C
before compaction (mm)
standard
D
Shape of conductor
As per specification
E
Diameter over conductor (mm)
……………
Maximum conductor resistance at 200
As per table 2 of IS -7098
F
C (ohm / km)
Part -1
6
Insulation
As per table 3 of IS -7098
A
Nominal thickness (mm)
Part -1
B
Minimum thickness (mm)
……………
Diameter over insulation (mm)
C
……………
Approx
7
Inner Sheath
As per table 5 of IS -7098
A
Minimum thickness
Part -1
B
Approx dia over sheath (mm) Approx
……………
As per table 6 of IS -7098
8
Galvanized steel Armour
Part -1
A
Number of strips
As per manufacturer Std.
B
Size (Thickness X width ) in mm
0.8 x 4
C
Dia of wire for 2CX10sqmm
1.4mm Min
D
Dia over Armour -Approx
……………
As per table 8 of IS -7098
9
Outer Sheath
Part -1
A
Thickness (Minimum)
B
Colour
Yellow
Weather proof paint (applicable for 2c
C
……………
x 10 sqmm and 4c x 10 sqmm only)
10
Approx. overall dia (mm)
……………
11
End Cap
Required
Continuous current rating for
12
standard I.S. condition laid Direct
388
Seller's Data
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
13
14
A
B
C
D
15
16
17
A
B
C
D
18
Schedule C7
a. In ground 30 0C Amps
a. In duct 30 0C Amps
a. In air 40 0C Amps
Short circuit current for 1 sec of
conductor (KAmp)
Electrical Parameters at Maximum
operating temperature
Resistance (Ohm / Km) (AC
Resistance)
Resistance AT 50 C/s (Ohm / Km)
Impedance (Ohm / Km)
Capacitance (Micro farad /Km)
Recommended minimum bending
radius
De-rating factor for following Ambient
Temperature in
a. At 30 OC
a. At 35 OC
a. At 40 OC
a. At 45 OC
a. At 50 OC
Group factor for following Nos. of
cables laid
3 Nos.
4 Nos.
5 Nos.
6 Nos.
Process of cross linking of
polyethylene
Seal of Company
……………
……………
……………
………………
……………
……………
………….
…………
…………….. X O/D
Ground /Air
Touching Trefoil
Dry cure
Bidders Name
: ____________________
Signature
: ____________________
Name
: ____________________
Designation
: ____________________
Date
: ____________________
389
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C8
SCHEDULE – C8
CONTROL CABLES
Sr.
1.0
2.0
3.0
4.0
A
B
5.0
A
B
C
D
E
F
6.0
A
B
C
7.0
Description
Make
Type (As per IS-1554 part-1)
Voltage Grade (kV)
Maximum conductor temperature
Continuous (°C)
Short time (°C)
Conductor
Size (mm2)
No. of wire in each conductor Nos.
Dia. of wires in each conductors
before compaction (mm)
Shape of conductor
Maximum conductor resistance at
20°C (Ω/Km.)
Number of conductor core
Insulation
Nominal thickness (mm)
Minimum thickness (mm)
Diameter over insulation (mm)
approx.
Inner Sheath
A
Minimum thickness
B
Approx. dia Over sheath (mm)
approx.
8.0
Galvanized steel armour
A
B
C
9.0
Number of wire/strip
Size (Dia/thickness x width) in mm
Dia over Armour -Approx
Outer Sheath
A
B
10.0
11.0
12.0
Thickness (Minimum)
Colour
Approx overall dia (mm)
End Cap
Drums provide with MS Spindle
plate & nut bolts arrangement
Buyers's requirement
YWY
1.1
70˚C
160˚C
10CX2.5, 6CX2.5Sqmm
As per Manufacturer standard
As per Manufacturer standard
As per the specification
As per Table 2 of IS 8130
As per CI & table 2 of IS-1554
Part-1
As per Table 4 of IS-1554
Part-1
a) As per Cl 13.2 of IS 1554
Part-1: Galvanized steel
round wire armour.
b) Minimum area of coverage
of armouring shall be 90%.
As per Manufacturer standard
As per Table 7 of IS-1554
Part-1
Black
Required
Required
390
Seller's Data
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
13.0
14.0
15
16
16.1
16.2
Schedule C8
Continuous current rating for
standard I.S. condition laid Direct
a) In ground 30˚C
Amps
b) In duct 30˚C
Amps
c) In air 40˚C
Amps
Recommended minimum bending
radius
Minimum Armour Coverage
Lay Ratios
Main Conductor
Armour
Seal of Company
12 x O/D
90% minimum
Bidders Name
: ____________________
Signature
: ____________________
Name
: ____________________
Designation
: ____________________
Date
: ____________________
391
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C9
SCHEDULE – C9
ILLUMINATION SYSTEM
1
+1.01
*1.02
*1.03
2
2.01
2.02
*2.03
*2.04
3
+3.01
3.02
+3.03
*3.04
*3.05
*3.06
*3.07
*3.08
4
4.01
+4.02
+4.03
*4.04
*4.05
*4.06
*4.07
*4.08
*4.09
*4.10
5
5.01
+5.02
*5.03
*5.04
*5.05
*5.06
*5.07
General
Make
Applicable Standards
Degree of protection
Lighting Panel /Feeder Pillarm Box
(LP/ELP/DLP/FPB/EPB/LDB/ELDB/
Construction Features)
Make
Rated Value
(V)
Busbar continuous current rating
(A)
Busbar material and cross section
Minimum current breakers :
Service
Make
Type
No. of poles
Rated continuous current
(A)
Short time current rating
(Ka)
Related Voltage
(V)
Breaking Current
(Ka)
Load Breaking Switches
Service
Make
Type
No. of poles
Related Voltage
(V)
Rated continuous current
(A)
Rated making current
(Ka peak)
Rated breaking current
(Ka)
Rated short time one (1) second current
(Ka)
Rated dynamic current
(kApeak)
Fuses
Service
Make
Type
Standard applicable
Related Voltage
(V)
Rated current
(A)
Fusing factor
392
1
2
3
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
*5.08
*5.09
6
+6.01
+6.02
*6.03
*6.04
6.05
6.06
7
+7.01
+7.02
7.03
*7.04
*7.05
*7.06
Schedule C9
Category of duty
Rupturing capacity (prospective current)
(Ka)
Earth Leakage current Breaker
Make
Type
No. of poles
Rated continuous current
(A)
Short time current rating
(Ka)
Rated Tripping current
Lighting Fixtures
Manufacturer
Type
Description of different types
Type and wattage of lamp
Rated life of the lamp
Applicable standards
Type
A
B
C
Note:- In case luminaries other than the ones specified in specification are offered, all
the deviations shall be listed out otherwise these shall be considered as being fully in
line with luminaries specified.
8
+8.01
+8.02
+8.03
*8.04
8.05
9
9.01
+9.02
+9.03
*9.04
*9.05
*9.06
*9.07
9.08
10
10.01
10.02
10.03
10.04
11
11.01
Receptacles with Switches
Make
Type
Related Voltage
(V)
Rated current
(A)
Technical brochures (Attach brochures
and state brochure Nos.)
Cables / Wire
Service
Make
Type
Voltage Grade
(V)
Conductor Material
Size of conductors (mm2)
Current rating of conductors
(A)
Applicable Standards
Conduits and Accessories
Make
Type
Material
Applicable Standards
Incandescent
Lamps
Lamp and Luminaries
Make
393
1
2
3
1
2
3
Fluorescent
Tubes
HPSV
Lamps
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
11.02
*11.03
*11.04
*11.05
12
12.01
12.02
12.03
12.04
Schedule C9
Type
Lumen output throughout life (Lumen)
Derating factor due to temperature
Derating factor due to aging
Lighting Poles / Towers
Manufacturer
Applicable Standards
Material and Painting
Height
Notes :
1. Single asterisk (*) marked particulars are guaranteed.
2. Other particulars are bonafide and may vary slightly upon completion of detailed design.
3. Particulars against items marked * and + shall be furnished with the Bid.
Seal of Company
Bidders Name
: ____________________
Signature
: ____________________
Name
: ____________________
Designation
: ____________________
Date
: ____________________
394
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C10
SCHEDULE – C10
AC DISTRIBUTION BOARDS
S.No
Description
1
1.1
Panel Construction
Enclosure Type
1.2
1.3
1.4
1.5
1.6
Enclosure degree of protection
Enclosure Material
Load bearing members
Doors and covers
Gland Plate (detachable type)
1.7
Separate compartment for
1.8
1.9
Breaker compartment door
Fixing arrangement
i.
Doors
ii. Covers
iii. Gasket
1.10
Panel Base Frame
1.11
Handle
1.12
1.13
2
2.1
2.2
2.3
2.3.1
2.3.2
2.4
Space Heater
Panel extension possibility
MCCB
Mounting
Rated Operational Voltage(V)
Ultimate breaking Capacity
630A MCCB
100A MCCB
Rated Service breaking
capacity at rated voltage Ics
Rotary handle
Interlocking arrangement
Trip time
Test Certificates
2.5
2.6
2.7
2.8
Buyers Requirement
Free standing, indoor, Fully
compartmentalized, Metal clad,
Vermin Proof
IP 5X
CRCA steel
Minimum 2.5 mm thick
Minimum 2.0 mm thick
3.0mm MS detachable type or
Aluminum 5.0mm for single
core cables
Bus bar, circuit breaker,
incoming cable, outgoing cable
PT, LV instruments.
Separate with lockable handle
Concealed hinged
Bolted with SS bolts
Neoprene
Steel base frame as per
manufacturer’s standard.
Removable bolted covers for
cable chamber and busbar
chamber shall be provided with
“C” type handles
Required
Required
Flush Mounted
415 volt
As per requirement
As per requirement
Ics =100% Icu
Required
Between Incomer MCCBs
As per requirement
Should have test certificates for
breaking
capacities
from
independent test authorities
395
Sellers Data
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C10
CPRI / ERDA or equivalent
3
3.1
3.2
MCB
Rated Operational Voltage(V)
Protection relay/Release
3.3
Breaking capacity
3.4
3.5
3.6
Mounting
MCB classification
ISI Marked
Seal of Company
415 VAC 50 Hz
Magnetic thermal release for
over current and short circuit
protection
Shall not be less than 10 KA at
415 VAC
Din mounted
As required
The complete range shall be
ISI marked
Bidders Name
: ____________________
Signature
: ____________________
Name
: ____________________
Designation
: ____________________
Date
: ____________________
396
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C11
SCHEDULE – C11
CABLE TRAYS, ACCESSORIES AND TRAY SUPPORT, CONDUITS, PIPES
AND DUCTS
1
a
b
c
2
a
i.
ii.
iii.
3
a
i.
ii.
iii.
b
i.
ii.
iii.
General
Name of the Contractor
Name of sub contractors, if any
Applicable standards
Cable Trays and Fittings
Cable Trays and Fittings
Make
Type
Material
1. Thickness
(mm)
2. Thickness of galvanization (microns)
3. Zinc coating per sq meter
(gms)
Conduits , Fitting and Accessories
Pipes with fitting
Make
Type
Material
1. Thickness
(mm)
2. Thickness of galvanization (microns)
Flexible conduits with fittings and accessories
Make
Type
Material
1. Thickness
(mm)
2. Thickness of galvanization (microns)
Seal of Company
Bidders Name
: ____________________
Signature
: ____________________
Name
: ____________________
Designation
: ____________________
Date
: ____________________
397
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C12
SCHEDULE – C12
GROUNDING & LIGHTNING PROTECTION SYSTEM
S.No.
1
a
b
c
Description
Earth mat
Material
Size of conductor
Fault withstand current & duration
Unit
2
a
b
Equipment Earthing
Material
Size of conductor
3
a
b
c
Earth Electrode
Material
Size
Length
4
Lightning Protection System
Material and size of horizontal air
termination
Material and size of vertical air termination
Material and size of down conductor
Size of test link
Material of enclosure for test link
Material and size of earth electrode
a
b
c
d
e
f
Seal of Company
Data by vendor
Bidders Name
: ____________________
Signature
: ____________________
Name
: ____________________
Designation
: ____________________
Date
: ____________________
398
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C13
SCHEDULE – C13
CABLE ACCESSORIES
1
1.01
1.02
1.03
1.04
1.05
1.06
1.07
1.08
1.09
1.1
1.11
1.12
Cable Accessories
Makes
Termination kits
Straight through joint kits
Cable glands
Cable lugs
Termination blocks
Types
Termination kits
Straight through joints
Cable glands
Cable lugs
Terminal blocks
Seal of Company
Bidders Name
: ____________________
Signature
: ____________________
Name
: ____________________
Designation
: ____________________
Date
: ____________________
399
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C14
SCHEDULE – C14
66 KV OUT DOOR CURRENT TRANSFORMER
A) 66 kV, 400-200/1/1/1/1A
Description
66 kV
72.5 kV
50 Hz
400-200 A
1A
10.1
Secondary Current
10.2
Purpose /Application
10.3
Rated output (project
specific)
30 VA
10.5
10.6
Instrument security factor
Accuracy limit factor
10.7
Knee point voltage &
corresponding exciting
current (project specific)
10.8
10.9
10.10
11
11.1
11.2
Magnetizing current at Vk/2
(project specific)
Resistance of the secondary
winding at 75 deg C
Secondary limiting voltage
Short time thermal rating of
primary
One Seconds
Three seconds
Core4
1A
PS
PS
30
VA
5P
20
30
mA
31.5 kA
400
40 (RCT+8)
Class of accuracy
0.5
0.2s
for
Line
Feeder
≤5
Core3
1A
40 (RCT+8)
10.4
1A
Core2
1A
Protection
(Spare)
Core-1
Metering
10.0
Data By Supplier
Protection
(Bus Bar)
Name of Manufacturer
Address and contact details
Type
Rated Nominal Voltage
Highest System Voltage
Rated Frequency
Rated Primary Current
Rated Secondary current
Number of cores
Protection
(O/C & E/F)
1
2
3
4
5
6
7
8
9
Data By Purchaser
30
mA
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
12
13
14
14.1
14.2
14.3
15
16
17
18
19
20
21
21.1
21.2
22
23
24
25
26
27
Rated dynamic current of
primary
Rated continuous thermal
current
Temp rise at an ambient of
50 deg C
Winding
Oil at the top
Exposed current carrying
parts
One minute power frequency
dry withstand voltage (KV
rms)
One minute power frequency
wet withstand voltage (KV
rms)
1.2/50 microsecond impulse
withstand test voltage KV
peak
Minimum creepage distance
in mm
Protective creepage distance
in mm
Magnetization curve of CT
core
Variations in ratio and phase
angle error due to variation in
Voltage by 1 Volt
Frequency by 1Hz
Current density in primary
winding
Weight of oil
Total weight
Mounting details
Overall dimensions
Terminal Connector
Schedule C14
140 kV rms
140 kV rms
325 kVp
31 mm/kV
401
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C14
B) 66 kV 1600-800/1/1/1/1A
Description
Secondary Current
10.2
Purpose /Application
10.3
Rated output (project
specific)
30 VA
Class of accuracy
10.5
10.6
Instrument security factor
Accuracy limit factor
10.7
Knee point voltage &
corresponding exciting
current (project specific)
10.8
10.9
10.10
11
11.1
11.2
12
Magnetizing current at Vk/2
(project specific)
Resistance of the secondary
winding at 75 deg C
Secondary limiting voltage
Short time thermal rating of
primary
One Seconds
Three seconds
Rated dynamic current of
primary
Description
13
0.5
0.2s
for
Line
Feeder
≤5
Core3
1A
Core4
1A
PS
PS
30
VA
5P
20
40 (RCT+8)
10.4
1A
Protection
(O/C & E/F)
10.1
Core2
1A
Protection
(Spare)
Core-1
Metering
10.0
66 kV
72.5 kV
50 Hz
1600-800 A
1A
30
mA
40 (RCT+8)
Name of Manufacturer
Address and contact details
Type
Rated Nominal Voltage
Highest System Voltage
Rated Frequency
Rated Primary Current
Rated Secondary current
Number of cores
Data By Supplier
Protection
(Bus Bar)
1
2
3
4
5
6
7
8
9
Data By Purchaser
30
mA
31.5 kA
Data By Purchaser
Rated continuous thermal
current
402
Data By Supplier
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
14
14.1
14.2
14.3
15
16
17
18
19
20
21
21.1
21.2
22
23
24
25
26
27
Temp rise at an ambient of
50 deg C
Winding
Oil at the top
Exposed current carrying
parts
One minute power frequency
dry withstand voltage (KV
rms)
One minute power frequency
wet withstand voltage (KV
rms)
1.2/50 microsecond impulse
withstand test voltage KV
peak
Minimum creepage distance
in mm
Protective creepage distance
in mm
Magnetization curve of CT
core
Variations in ratio and phase
angle error due to variation in
Voltage by 1 Volt
Frequency by 1Hz
Current density in primary
winding
Weight of oil
Total weight
Mounting details
Overall dimensions
Terminal Connector
Seal of Company
Schedule C14
140 kV rms
140 kV rms
325 kVp
31 mm/kV
Bidders Name
: ____________________
Signature
: ____________________
Name
: ____________________
Designation
: ____________________
Date
: ____________________
403
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C15
SCHEDULE – C15
66 KV OUT DOOR POTENTIAL TRANSFORMER & CVT
Description
1.0
Location of Equipment
2.0
3.0
Name of Manufacturer
Address & Contact details
4.0
Type
5.0
Manufacturer Model No
Reference design ambient
temperature
Reference Standard
Nominal system voltage
Highest system voltage
Basic Insulation level
Power frequency voltage
Type of cooling
Rated frequency (Hz)
Insulation Class
Rated Primary voltage
Rated secondary voltage
Number of secondary cores
CORE Specifications
Core - 1
Purpose
Rated Output
Class of accuracy
Ratio error
Phase angle error
Core - 2
Purpose
Rated Output
Class of accuracy
Ratio error
Phase angle error
Rated over voltage factor
- Continuous
- 30 Seconds
Temperature rise above an
ambient of 50Deg C at 1.2
times voltage factor for 30
seconds rating
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
18.1
18.2
18.3
18.4
18.5
18.6
19.0
19.1
19.2
19.3
19.4
19.5
20.0
20.1
20.2
21.0
Data By Purchaser
Project specific to be filled
up
Single phase, outdoor,
dead tank type, oil
immersed, self-cooled
type.
50 Deg C
IS: 3156 (Part1 to 4)
66KV
72.5KV
325KVp
140KV
ONAN
50 Hz
A
66KV / √3
110V / √3
Two
Metering
50 VA
0.2S
As per IS
As per IS
Protection
50 VA
3P
As per IS
As per IS
1.2 times
1.5 times
404
Data By Supplier
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
21.1
21.2
22.0
22.1
22.2
23.0
24.0
25.0
26.0
27.0
28.0
29.0
30.0
31.0
32.0
33.0
34.0
- For Winding
- For Oil
Temperature rise above an
ambient of 50Deg C at 1.5
times voltage factor for 30
seconds rating
- For Winding
- For Oil
One minute power frequency
dry withstand voltage for 66 kV
PT (KV rms)
One minute power frequency
wet withstand voltage for 66
kV PT (KV rms)
1.2/50 microsecond impulse
withstand test voltage for 66
KV PT (KV rms)
One minute Power frequency
withstand voltage on
secondary winding
Minimum creepage distance in
mm for 66KV PT
Protective creepage distance
in mm for 66KV PT
Partial discharge test, whether
will be carried out Yes / No
Weight of core
Weight of oil
Total weight
Mounting details
Overall dimensions
Seal of Company
Schedule C15
50 Deg C
40 Deg C
50 Deg C
40 Deg C
325 KVp
3KV
2250 mm
1125 mm
Bidders Name
: ____________________
Signature
: ____________________
Name
: ____________________
Designation
: ____________________
Date
: ____________________
405
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C16
SCHEDULE – C16
66 KV OUT DOOR CIRCUIT BREAKER
Sl.
No.
1.0
2.0
Item Description
Name of manufacturer
Manufacturer's type and
designation
3.0
Governing standard
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
13.1
13.2
Type of circuit breaker
Installation
No. of phase & no. of pole
Rated voltage (kV)
Highest System voltage (kV)
System neutral
Rated insulation level
Frequency (Hz)
Class
Normal current rating (amps)
Under standard conditions
13.3
13.4
14.0
15.0
16.0
16.1
16.2
Data By Purchaser
As per Clause 1.0.0 of the
specification
SF6
Outdoor
3 (Three), 3 (Three)
66KV
72.5 KV
Solidly earthed
325KVp
50 Hz
2000 A
Under site conditions overload
rating
a) 1 Hour
b) 3 Hour
Derating Factor, if any, for site
condition
Temperature rise at 150% rating
for 3 Hours
Short time current rating (kA)
a) For 1 sec
b) For 3 sec
31.5 kA
Maximum temperature rise over
highest ambient (refer
annexure-B) due to rated
current in main contacts,
measured after breaking test
40 deg C
Rated short circuit breaking
current
Rated short circuit current (AC
component)
Percentage DC component at
KV
406
Data By Supplier
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
16.3
16.4
17.0
18.0
18.1
18.2
18.3
18.4
19.0
20.0
21.0
22.0
23.0
24.0
24.1
24.2
25.0
25.1
25.2
25.3
25.4
26.0
27.0
28.0
Asymmetrical breaking Current
(including DC Component)
Making capacity (KA peak)
- at KV
Rated operating sequence
Total break time (Milli-seconds):
For interruption of 10% of the
rated capacity
For interruption of 30% of the
rated capacity
For interruption of 60% of the
rated capacity
For interruption of the full rated
capacity
Arcing time (Milli-seconds)
Opening time (Milli-seconds)
Break time (Milli-seconds)
Closing time (Milli-seconds)
Schedule C16
O-0.3Sec-CO-3Min-CO
60ms (max)
60ms (max)
60ms (max)
60ms (max)
60ms (max)
Minimum reclosing time at rated
interrupted capacity from the
instant of the trip coil
energisation (Milli-seconds)
Minimum dead time for
3 phase reclosing (Milliseconds)
Limit of adjustment of dead time
for 3- phase reclosing
Data on re-striking voltage for
100%, 50% or 30% rated
capacity
Phase factor
Amplitude factor
Natural frequency
Rate of rise of re-striking voltage
(V/micro sec)
Rated out-of phase breaking
current
Rated line charging breaking
current
100% 50% 30%
Maximum line charging current:
breaking capacity and
corresponding over-voltage
recorded in test:
c) On supply side
d) On line side
407
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
29.0
30.0
30.1
30.2
31.0
32.0
33.0
34.0
34.1
35.0
35.1
35.2
36.0
36.1
36.2
36.3
37.0
37.1
37.2
37.3
38.0
38.1
38.2
Schedule C16
Maximum cable charging
current breaking capacity and
corresponding over voltage
recorded in test:
a) On supply side
b) On line side
Rated single capacitor bank:
Capacity in rush current
handling, capability
Capacitive breaking current
capability
Rated small inductive breaking
current and the corresponding
over voltage
first pole clear factor
Rated transient recovery voltage
for terminal faults
Rated characters for short line
faults is rate of rise
Rated short circuit breaking
current
1.5
Dry 1-minute power frequency
test withstand voltage, for
complete circuit breaker
Between line terminal and
grounded parts (KV rms)
Between terminals with breaker
contact open (KV rms)
Wet 1-minute power frequency
test withstand voltage:
Between line terminal and
grounded parts (KV rms)
Between terminals with breaker
contact open (KV rms)
Between poles
1.2/50 microsecond wave
impulse withstand test voltage
for complete circuit breaker:
Between line terminal and
ground (KV peak)
Between terminals with breaker
contact open (KV rms)
Between poles
Minimum clearance in air
Between phases (mm)
Live parts and earth (mm)
140kV (rms)
140kV (rms)
140kV (rms)
140kV (rms)
325kVp
325kVp
630mm (min)
630mm (min)
408
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
38.3
39.0
39.1
39.2
39.3
39.4
40.0
40.1
40.2
40.3
40.4
40.5
40.6
40.7
40.8
40.9
41.0
42.0
43.0
44.0
45.0
46.0
47.0
48.0
49.0
50.0
Live parts to ground level (mm)
Number of operation possible
without maintenance
At full rated interrupting capacity
At 150% of rated current
At 100% of rated current
At 50% of rated current
Supporting Insulator
Make and type
Insulation class
Weight
Transport dimensions
Visible corona discharge voltage
Dry-1 minute power frequency
flashover voltage
Wet-1 minute power frequency
flashover voltage
1.2/50 microsecond impulse
flashover voltage
Creepage distance to ground
(mm)
c) Total
d) Protected
No. of breaks per pole
Total length or breaks per phase
(mm)
Type of main contact
Material of main contacts
Whether main contacts silver
plated (Yes/No) Thickness of
silver coating on main
contacts(mm)
Schedule C16
4000mm (min)
A
140kV rms
140kV rms
325kVp
31mm/kV
1 (one)
Silver plated copper
15 =/- 5 microns (min)
Contact pressure on arcing
contacts (kg/m2)
Type of arcing contacts
Contact pressure on main
contact (kg/m2)
Type of auxiliary switches
Whether all contacts silver
plated (Yes/No)
51.0
No of auxiliary switch contacts
operating with all three poles of
breaker
51.1
Which are closed when breaker
is closed
409
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
51.2
51.3
52.0
52.1
52.2
52.3
53.0
54.0
55.0
56.0
57.0
58.0
59.0
60.0
61.0
62.0
63.0
64.0
65.0
65.1
65.2
65.3
65.4
65.5
Schedule C16
Which are open when breaker
closed
Those adjustable with respect to
the position of main contacts
No of spare auxiliary switch
contacts operation with all three
poles of breaker
Which are closed when breaker
is closed
Which are open when breaker is
closed
Those adjustable with respect to
the position of main contacts
Total number of terminal block
Number of spare terminal Block
Mounting flange details:
a) Opening
b) Closing
Tripping and closing circuit
voltage (V)
Power required for trip coil
Power required for closing coil
Rated voltage for spring
charging motor
Rated voltage of space heater
and socket
Contingencies for which alarm
provided
Design data for supporting
structure
Weight of supporting steel
structure for breaker
Descriptive leaflets enclosed
(Yes/No)
For SF6 gas circuit breaker
Rated pressure of SF6 Gas in
the gas cylinder (kg/sq cm)
Quantity of SF6 gas required
per single pole unit (kg)
Quantity of SF6 gas required
cylinder (kg)
Weight of empty cylinder (kg)
Quantity of absorbent required
per pole(kg)
6 (Six)
6 (Six)
20%
50V/110V/220V DC
240V AC
240V AC
410
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
65.6
Recommended interval for
renewal of absorbent in case of
outdoor circuit breakers
operating in tropical conditions.
65.7
Chemical composition of the
absorbent
65.8
Quantity of absorbent covered
in the scope of supply.
(including spare qty.) (kg)
65.9
Limit of gas pressure for proper
operation of circuit breaker
65.10
Pressure and temperature at
which temperature at which the
temperature compensated gas
pressure switch will:
a) Give alarm
b) Cut off
65.11
65.12
65.13
66.0
66.1
66.2
66.3
66.4
Name of SF6 supplier and
country of origin
Quantity of SF6 gas supplied
for:
a) Actual use in breaker (kg)
b) As spare (kg)
Chemical composition of gas:
a) Qty of air by weight (ppm)
b) Qty of H20 by weight (ppm)
c) Qty of CF4 by weight (ppm)
Operating Mechanism
Type of operating mechanism
offered
Manufacturer's type designation
Material of control cabinet
enclosure
Thickness of sheet metal
enclosure
66.5
Painting & colour shade
66.6
Enclosure protection
Pad locking facility provided
(yes/No)
Wiring
a) Control wire size
66.7
66.8
Schedule C16
3.0mm for bottom and
2.5mm elsewhere
Polyurthane paint, 692 of
IS-5
IP 55
1.5 Sqmm
b) Insulation
650V
c) Colour
Grey for control, Black for
AC and Green for earth.
411
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
66.9
66.10
Normal power consumption at
rated voltage (Watt)
Normal power spring charging
motor
66.11
Number of close/open operation
possible after failure of AC
supply to motor
66.12
Time required to charge the
closing spring
66.13
66.14
66.15
67.0
68.0
68.1
68.2
69.0
70.0
71.0
72.0
Schedule C16
Whether indication of spring
charged condition provided in
central control cabinet (Yes/No)
Dimension of the control
cabinets
Weight of control cabinet
Details of safety interlock
provided
Whether supporting structure for
circuit breaker provided
(Yes/No)
Thickness of galvanizing (mm)
Size of foundation bolts
Material of nuts & bolts
Stainless steel
Weight of 3-phase breaker
complete with operating
mechanism, insulating support
frame work, etc.
Impact loading for foundation
design to include load plus
impact value on operating at
maximum interrupting ratings in
terms of equivalent of static
load.
Weight of heaviest package
Seal of Company
Bidders Name
: ____________________
Signature
: ____________________
Name
: ____________________
Designation
: ____________________
Date
: ____________________
412
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C17
SCHEDULE – C17
66 KV OUT DOOR LIGHTNING ARRESTER
413
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C17
Corporate office: BSES Bhawan, Nehru Place, New Delhi- 19
414
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Seal of Company
Schedule C17
Bidders Name
: ____________________
Signature
: ____________________
Name
: ____________________
Designation
: ____________________
Date
: ____________________
Corporate office: BSES Bhawan, Nehru Place, New Delhi- 19
415
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C18
SCHEDULE – C18
66 KV OUT DOOR DISCONNECTING SWITCH
416
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C18
417
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule C18
418
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Seal of Company
Schedule C18
Bidders Name
: ____________________
Signature
: ____________________
Name
: ____________________
Designation
: ____________________
Date
: ____________________
419
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule E1
SCHEDULE – E1
TECHNICAL DEVIATIONS FROM THE SPECIFICATION
(This shall form part of Technical Bid)
All the technical deviation from the tender specification shall be listed out by the Bidder, para by
para in this schedule. Deviation taken in covering letter, standard terms and/or body of the Bid but
not listed herein will make the Bid liable for rejection as ‘Irresponsive’
S.No.
Section/Sub-Section Part
1
2
3
Para
4
Deviation
Justification
5
6
Certified that above are the only technical deviations from the tender Specification
Name of Firm
: ____________________
Signature of Bidder
: ____________________
Designation
: ____________________
Date
: ____________________
Seal of Company
420
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule E2
SCHEDULE – E2
COMMERCIAL DEVIATIONS FROM THE SPECIFICATION
(This shall form part of Technical Bid)
All the commercial deviation from the tender specification shall be listed out by the Bidder, para by
para in this schedule. Deviation taken in covering letter, standard terms and/or body of the Bid but
not listed herein will make the Bid liable for rejection as ‘Irresponsive’.
S.No.
Section/Sub-Section Part
1
2
3
Para
4
Deviation
Justification
5
6
Certified that above are the only technical deviations from the tender Specification
Name of Firm
: ____________________
Signature of Bidder
: ____________________
Designation
: ____________________
Date
: ____________________
Seal of Company
421
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule F
SCHEDULE – F
LIST OF DRAWINGS ENCLOSED WITH BID
(This shall form part of Technical Bid)
S.No.
1
Drawing No
Title
2
3
Name of Firm
: ____________________
Signature of Bidder
: ____________________
Designation
: ____________________
Date
: ____________________
Seal of Company
422
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
SCHEDULE – G
SCHEDULE OF TEST
(This shall form part of Technical Bid)
Tests as per the relevant Indian Standard except as modified and/or as additionally called for in the
tender specification shall be performed. Detailed list of the type test certificates enclosed for the
various equipments offered shall be listed in the schedule.
S.No.
Type of test
1
Equipment
Description
3
4
2
1.0
TYPE TESTS
2.0
TESTS
– DURING MANUFACTURE
3.0
ROUTINE TESTS
– ON COMPLETION OF MANUFACTURE
Name of Firm
: ____________________
Signature of Bidder
: ____________________
Designation
: ____________________
Date
: ____________________
Seal of Company
423
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
SCHEDULE – H
LIST OF INSTRUMENTS, TESTING EQUIPMENTS, TOOLS AND TACKLES
FOR ERECTION AND MAINTANANCE
(This shall form part of Technical Bid)
S.No.
Description
Capacity
Quantity
Delivery
(1)
(2)
(3)
(4)
(5)
1.0 INSTRUMENTS, TESTING EQUIPMENT, TOLLS & TACKLES FOR ERECTION
(To be taken back by the Bidder after completion of job)
2.0 INSTRUMENTS, TESTING EQUIPMENT, TOOLS & TACKLES FOR MAINTENANCE
(To be taken back by the Bidder after completion of job)
3.0 SPECIAL INSTRUMENTS, TSTING EQUIPMENT, TOOLS & TACKLES FOR ERECTION
(To be taken back by the Bidder after completion of job)
4.0 SPECIAL INSTRUMENTS, TSTING EQUIPMENT, TOOLS & TACKLES FOR MAINTENANCE
(To be taken back by the Bidder after completion of job)
Name of Firm
: ____________________
Signature of Bidder
: ____________________
Designation
: ____________________
Date
: ____________________
Seal of Company
424
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule I
SCHEDULE – I
LIST OF INSTALLATIONS
S.No. Purchaser Project PF Ref. Brief Description Value
Target Commissioning Commissioned Performance Person to whom reference may be made Remarks 1 2 3 4 5 6 7 8 9 10 11 Seal of Company
425
Bidders Name
: ____________________
Signature
: ____________________
Name
: ____________________
Designation
: ____________________
Date
: ____________________
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule J
SCHEDULE – J
DELIVERY TERMS AND CONDITIONS
1
1.1
2
2.1
2.2
2.3
2.4
2.5
3
3.1
3.2
3.3
3.4
4
5
5.1
5.2
6
6.1
6.2
7
8
Quoted for all the items & in the manner as called
for in Specification
If not, furnish details of deviations
Price FOR site delivery basis
Freight:
1 Applicable rate
Transit Insurance including forty five(45) days
storage
1 Applicable rate
Excise duty
1 Applicable rate
Sales tax
1 Applicable rate
Are quoted price firm
Delivery from LOI
Supply
Erection
Testing & commissioning
Whether penalty clause acceptable
Validity
Terms of payment
As per tender specification
If not, give details
Guarantee period
Is it as per the tender specification
If not, state alternative guarantee period acceptable
Earnest money furnished
Agreeable to furnish security deposit as per the
tender specification
8.1
9
10
11
12
13
*Yes/No
* Not included/included
* Not included/included
* Not included/included
* Not included/included
*Yes/No
*Yes/No
*Yes/No
*Yes/No
*Yes/No
*Yes/No
*Yes/No
Agreeable to furnish performance Bank as per the
tender specification
Correspondence, drawings, test certificates,
instruction manuals, BAR/PERT charts progress
reports etc. shall be furnished in number of copies
as per distribution schedule attached
to the tender specification
Agreeable to approval of above documents in our
(4) weeks from date of receipt as per tender
specification
Agreeable to commercial as well as technical terms
& conditions of the tender specification, unless listed
deviations are accepted
Commencing & completion of submission of
drawings from LOI
426
*Yes/No
*Yes
Yes
Yes
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Seal of Company
Schedule J
Bidders Name
: ____________________
Signature
: ____________________
Name
: ____________________
Designation
: ____________________
Date
: ____________________
427
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule K
SCHEDULE – K
SCHEDULE OF RECOMMENDED SPARES
Bidder shall offer the prices for spares for destination, rate of taxes & duties to be
considered shall be indicated.
S.No. Description Quantity Unit Price Total Price 1 2 3 4 5 Seal of Company
Bidders Name
: ____________________
Signature
: ____________________
Name
: ____________________
Designation
: ____________________
Date
: ____________________
428
BSES Bhawan, Nehru Place, New Delhi- 19
Volume – 2 Schedules & Annexure
Schedule L
SCHEDULE – L
DECLARATION
(This shall form part of Technical Bid)
I, ________________________ certify that all the typed data & information pertaining to the
subject tender specification are correct & are true representation of the equipment covered by our
formal Bid No_________________dated________________.
I hereby, certify that I am duly authorized representative of the Bidder whose name appears above
my signature.
Seal of Company
Bidder’s Intent
:
Bidders Name
: ____________________
Authorized Representative
Signature
: ____________________
Authorized Representative
Name (Typed)
: ____________________
Authorized Representative
Designation
: ____________________
Date
: ____________________
The bidder hereby agrees to fully comply with the requirements
& intents of the subject tender specification for the price(s)
indicated
Authorized Representative
Signature
429
: ____________________
430
434
ANNEXURE-L